diff --git a/enzevalos_iphone.xcodeproj/project.pbxproj b/enzevalos_iphone.xcodeproj/project.pbxproj
index b76db87e050dceae7885d32ed911f4467de28a61..5cf2b396c2a850739611d30610dcceccf2fcdc8a 100644
--- a/enzevalos_iphone.xcodeproj/project.pbxproj
+++ b/enzevalos_iphone.xcodeproj/project.pbxproj
@@ -44,6 +44,7 @@
 		474054982244D7A9007CF83B /* MailServerConfigurationTest.swift in Sources */ = {isa = PBXBuildFile; fileRef = 474054972244D7A9007CF83B /* MailServerConfigurationTest.swift */; };
 		474994022261E4E6000F8DA5 /* SimpleSendIcon.swift in Sources */ = {isa = PBXBuildFile; fileRef = 474994012261E4E6000F8DA5 /* SimpleSendIcon.swift */; };
 		4751C6EE233CA583006B2A4D /* DateExtension.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4751C6ED233CA583006B2A4D /* DateExtension.swift */; };
+		4751C6F82343B37C006B2A4D /* Onboarding.Video.Click.Eng.m4v in Resources */ = {isa = PBXBuildFile; fileRef = 4751C6F72343B377006B2A4D /* Onboarding.Video.Click.Eng.m4v */; };
 		4756DE0E20402F8E00452288 /* invitationTextCensor.html in Resources */ = {isa = PBXBuildFile; fileRef = 4756DE0D20402F8E00452288 /* invitationTextCensor.html */; };
 		475B00331F7B9565006CDD41 /* SwiftPGP.swift in Sources */ = {isa = PBXBuildFile; fileRef = 475B00301F7B9565006CDD41 /* SwiftPGP.swift */; };
 		475B00341F7B9565006CDD41 /* Cryptography.swift in Sources */ = {isa = PBXBuildFile; fileRef = 475B00311F7B9565006CDD41 /* Cryptography.swift */; };
@@ -290,6 +291,7 @@
 		474994012261E4E6000F8DA5 /* SimpleSendIcon.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SimpleSendIcon.swift; sourceTree = "<group>"; };
 		4751C6ED233CA583006B2A4D /* DateExtension.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DateExtension.swift; sourceTree = "<group>"; };
 		4751C6F0233CE1E4006B2A4D /* enzevalos_iphone 7.xcdatamodel */ = {isa = PBXFileReference; lastKnownFileType = wrapper.xcdatamodel; path = "enzevalos_iphone 7.xcdatamodel"; sourceTree = "<group>"; };
+		4751C6F72343B377006B2A4D /* Onboarding.Video.Click.Eng.m4v */ = {isa = PBXFileReference; lastKnownFileType = file; path = Onboarding.Video.Click.Eng.m4v; sourceTree = "<group>"; };
 		4756DE0D20402F8E00452288 /* invitationTextCensor.html */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.html; name = invitationTextCensor.html; path = Invitation/invitationTextCensor.html; sourceTree = "<group>"; };
 		475B00301F7B9565006CDD41 /* SwiftPGP.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SwiftPGP.swift; sourceTree = "<group>"; };
 		475B00311F7B9565006CDD41 /* Cryptography.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Cryptography.swift; sourceTree = "<group>"; };
@@ -992,6 +994,7 @@
 				479C649821F45DAF00A01071 /* HideShowPasswordTextField.swift */,
 				479C649921F45DAF00A01071 /* PasswordToggleVisibilityView.swift */,
 				A1083A531E8BFEA6003666B7 /* Onboarding.swift */,
+				4751C6F72343B377006B2A4D /* Onboarding.Video.Click.Eng.m4v */,
 				A102AA891EDDB4E80024B457 /* videoOnboarding2.m4v */,
 				A1C62E992018F716000E5273 /* OnboardingValueState.swift */,
 			);
@@ -1281,6 +1284,7 @@
 				F12D8DBB2069422A0068788E /* About.storyboard in Resources */,
 				477670C4228453FB00043604 /* ButtonCell.xib in Resources */,
 				47E7377022845F3A00972401 /* KeyViews.storyboard in Resources */,
+				4751C6F82343B37C006B2A4D /* Onboarding.Video.Click.Eng.m4v in Resources */,
 				A1E5960E1FCC871F003791E9 /* researchteam.asc in Resources */,
 				A1123E6A1DA682850069551C /* Localizable.strings in Resources */,
 				A1F992291DA7C9100073BF1B /* Main.storyboard in Resources */,
diff --git a/enzevalos_iphone/Base.lproj/Main.storyboard b/enzevalos_iphone/Base.lproj/Main.storyboard
index 60f8db2dbba092e3dd9cc27469fd1d846d86bafd..1a2954811c4a8def965c430090a7eeab048f042b 100644
--- a/enzevalos_iphone/Base.lproj/Main.storyboard
+++ b/enzevalos_iphone/Base.lproj/Main.storyboard
@@ -16,7 +16,7 @@
             <objects>
                 <tableViewController storyboardIdentifier="UITableViewController-Ouw-WD-EV6" id="Ouw-WD-EV6" customClass="ReadViewController" customModule="enzevalos_iphone" customModuleProvider="target" sceneMemberID="viewController">
                     <tableView key="view" clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="static" style="grouped" separatorStyle="default" allowsSelection="NO" rowHeight="44" sectionHeaderHeight="8" sectionFooterHeight="1" id="oZT-OA-Re5">
-                        <rect key="frame" x="0.0" y="0.0" width="320" height="504"/>
+                        <rect key="frame" x="0.0" y="0.0" width="320" height="568"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <color key="backgroundColor" red="0.93725490199999995" green="0.93725490199999995" blue="0.95686274510000002" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                         <sections>
@@ -182,7 +182,7 @@
                                                             </constraints>
                                                         </view>
                                                         <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="qTi-rO-CH3">
-                                                            <rect key="frame" x="148" y="5.5" width="140" height="33"/>
+                                                            <rect key="frame" x="148" y="0.0" width="140" height="44"/>
                                                             <constraints>
                                                                 <constraint firstAttribute="height" constant="44" id="voC-CF-ncN"/>
                                                             </constraints>
@@ -636,6 +636,7 @@
                         <barButtonItem style="plain" systemItem="flexibleSpace" id="LhP-ZB-o4i"/>
                     </toolbarItems>
                     <navigationItem key="navigationItem" id="qTG-y6-efi">
+                        <barButtonItem key="leftBarButtonItem" title="General" id="yw6-dD-zxn"/>
                         <barButtonItem key="rightBarButtonItem" title="Über uns" id="vnz-ap-Ddb">
                             <connections>
                                 <segue destination="FKr-2d-hqd" kind="showDetail" id="g52-46-pxE"/>
@@ -662,7 +663,7 @@
             <objects>
                 <tableViewController storyboardIdentifier="UITableViewController-ooe-0X-glz" id="ooe-0X-glz" customClass="ListViewController" customModule="enzevalos_iphone" customModuleProvider="target" sceneMemberID="viewController">
                     <tableView key="view" clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="44" sectionHeaderHeight="28" sectionFooterHeight="28" id="ipK-4X-lVA">
-                        <rect key="frame" x="0.0" y="0.0" width="320" height="504"/>
+                        <rect key="frame" x="0.0" y="0.0" width="320" height="568"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
                         <prototypes>
@@ -748,7 +749,7 @@
             <objects>
                 <tableViewController storyboardIdentifier="UITableViewController-8Di-x2-cWQ" id="8Di-x2-cWQ" customClass="ContactViewController" customModule="enzevalos_iphone" customModuleProvider="target" sceneMemberID="viewController">
                     <tableView key="view" clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="grouped" separatorStyle="default" rowHeight="44" sectionHeaderHeight="18" sectionFooterHeight="18" id="lK7-ug-OyQ">
-                        <rect key="frame" x="0.0" y="0.0" width="320" height="504"/>
+                        <rect key="frame" x="0.0" y="0.0" width="320" height="568"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <color key="backgroundColor" cocoaTouchSystemColor="groupTableViewBackgroundColor"/>
                         <prototypes>
@@ -1002,14 +1003,14 @@
                                     <autoresizingMask key="autoresizingMask"/>
                                     <subviews>
                                         <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" insetsLayoutMarginsFromSafeArea="NO" text="Title" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="iln-tB-cUf">
-                                            <rect key="frame" x="15" y="12" width="33.5" height="20.5"/>
+                                            <rect key="frame" x="16" y="12" width="33.5" height="20.5"/>
                                             <autoresizingMask key="autoresizingMask"/>
                                             <fontDescription key="fontDescription" type="system" pointSize="17"/>
                                             <nil key="textColor"/>
                                             <nil key="highlightedColor"/>
                                         </label>
                                         <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" insetsLayoutMarginsFromSafeArea="NO" text="Detail" textAlignment="right" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="LXh-0V-sEL">
-                                            <rect key="frame" x="261" y="12" width="44" height="20.5"/>
+                                            <rect key="frame" x="260" y="12" width="44" height="20.5"/>
                                             <autoresizingMask key="autoresizingMask"/>
                                             <fontDescription key="fontDescription" type="system" pointSize="17"/>
                                             <nil key="textColor"/>
@@ -1026,7 +1027,7 @@
                                     <autoresizingMask key="autoresizingMask"/>
                                     <subviews>
                                         <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" insetsLayoutMarginsFromSafeArea="NO" text="Title1" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="0j5-Ji-UQu">
-                                            <rect key="frame" x="15" y="0.0" width="290" height="43.5"/>
+                                            <rect key="frame" x="16" y="0.0" width="288" height="43.5"/>
                                             <autoresizingMask key="autoresizingMask"/>
                                             <fontDescription key="fontDescription" type="system" pointSize="17"/>
                                             <nil key="textColor"/>
@@ -1193,7 +1194,7 @@
             <objects>
                 <viewController id="jYD-fk-aIP" customClass="KeyViewController" customModule="enzevalos_iphone" customModuleProvider="target" sceneMemberID="viewController">
                     <tableView key="view" clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="grouped" separatorStyle="default" rowHeight="44" sectionHeaderHeight="18" sectionFooterHeight="18" id="ZAH-bZ-S6n">
-                        <rect key="frame" x="0.0" y="0.0" width="320" height="504"/>
+                        <rect key="frame" x="0.0" y="0.0" width="320" height="568"/>
                         <autoresizingMask key="autoresizingMask" flexibleMaxX="YES"/>
                         <color key="backgroundColor" cocoaTouchSystemColor="groupTableViewBackgroundColor"/>
                         <edgeInsets key="layoutMargins" top="10" left="20" bottom="10" right="20"/>
@@ -1376,7 +1377,7 @@
             <objects>
                 <tableViewController storyboardIdentifier="exportInfoViewController" id="7Pd-d5-0wz" customClass="ExportInfoViewController" customModule="enzevalos_iphone" customModuleProvider="target" sceneMemberID="viewController">
                     <tableView key="view" clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" showsHorizontalScrollIndicator="NO" dataMode="prototypes" style="grouped" separatorStyle="default" sectionIndexMinimumDisplayRowCount="1" rowHeight="-1" sectionHeaderHeight="18" sectionFooterHeight="18" id="2Uv-bd-pB1">
-                        <rect key="frame" x="0.0" y="0.0" width="320" height="504"/>
+                        <rect key="frame" x="0.0" y="0.0" width="320" height="568"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <color key="backgroundColor" cocoaTouchSystemColor="groupTableViewBackgroundColor"/>
                         <prototypes>
@@ -1573,7 +1574,7 @@ Um deine sicheren E-Mails auch auf einem anderen Gerät lesen zu können, muss d
                                             <nil key="textColor"/>
                                             <nil key="highlightedColor"/>
                                         </label>
-                                        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" ambiguous="YES" text="3456-7890-1234-" textAlignment="center" lineBreakMode="characterWrap" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="QaR-WZ-20E">
+                                        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="3456-7890-1234-" textAlignment="center" lineBreakMode="characterWrap" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="QaR-WZ-20E">
                                             <rect key="frame" x="85.5" y="173.5" width="153" height="17.5"/>
                                             <fontDescription key="fontDescription" type="boldSystem" pointSize="17"/>
                                             <nil key="textColor"/>
@@ -1949,7 +1950,7 @@ Um deine sicheren E-Mails auch auf einem anderen Gerät lesen zu können, muss d
         <segue reference="QXm-7K-984"/>
         <segue reference="hSn-Um-hji"/>
         <segue reference="DcR-GX-scc"/>
-        <segue reference="TgN-rB-esa"/>
-        <segue reference="PxQ-Nb-6Fq"/>
+        <segue reference="NPH-pL-mw2"/>
+        <segue reference="6Ug-AV-lba"/>
     </inferredMetricsTieBreakers>
 </document>
diff --git a/enzevalos_iphone/KeyViews.storyboard b/enzevalos_iphone/KeyViews.storyboard
index d79070c65596a14e58770ea810b183a17ad36066..5a06670196e0c93ff61ca4f68e5b8e9245a1fbc7 100644
--- a/enzevalos_iphone/KeyViews.storyboard
+++ b/enzevalos_iphone/KeyViews.storyboard
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14460.31" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14490.70" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
     <device id="retina4_7" orientation="portrait">
         <adaptation id="fullscreen"/>
     </device>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14460.20"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14490.49"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
diff --git a/enzevalos_iphone/Logger.swift b/enzevalos_iphone/Logger.swift
index f77d83f7c1d0a8a51a84993cda5e3c2047e41c23..06612c2cef55baee1f58528582f81c66a3e63680 100644
--- a/enzevalos_iphone/Logger.swift
+++ b/enzevalos_iphone/Logger.swift
@@ -11,7 +11,7 @@ import Foundation
 class Logger{
     
     static var logging = StudySettings.studyMode
-    static let loggingInterval = 21600 //60*60*6 seconds = 6 hours
+    static let loggingInterval = 86400 // 21600 = 60*60*6 seconds = 6 hours
     static let resendInterval = 5 * 60
     static let logReceiver = LOGGING_MAIL_ADR
     
@@ -21,11 +21,12 @@ class Logger{
     static fileprivate func sendCheck() {
         if nextDeadline <= Date() && AppDelegate.getAppDelegate().currentReachabilityStatus != .notReachable && UserManager.loadUserValue(Attribute.accountname) != nil && UserDefaults.standard.bool(forKey: "launchedBefore"){
             //Do not send duplicate mails
-            let tmpNextDeadline = Date(timeIntervalSinceNow: TimeInterval(resendInterval))
+            let tmpNextDeadline = Date(timeIntervalSinceNow: TimeInterval(loggingInterval))
             nextDeadline = tmpNextDeadline
             UserManager.storeUserValue(nextDeadline as AnyObject?, attribute: Attribute.nextDeadline)
             sendLog()
         }
+       
     }
     
     static func log(setupStudy studypara: [StudyParameterProtocol.Type], alreadyRegistered: Bool) {
@@ -297,10 +298,6 @@ class Logger{
         guard error == nil else {
             return
         }
-        
-        let tmpNextDeadline = Date(timeIntervalSinceNow: TimeInterval(loggingInterval))
-        nextDeadline = tmpNextDeadline
-        UserManager.storeUserValue(nextDeadline as AnyObject?, attribute: Attribute.nextDeadline)
     }
     static func log(warning: LogData.WarningType) {
         LogData.warning(type: warning)
@@ -346,6 +343,8 @@ public class LogInUserDefaults {
         for (key, value) in logger.dictionaryRepresentation() {
             if let _ = value as? Int {
                 logger.set(0, forKey: key)
+            } else {
+                logger.set(nil, forKey: key)
             }
         }
         logger.set(Date(), forKey: "\(prefix).\(startDateName)")
@@ -356,7 +355,8 @@ public class LogInUserDefaults {
         let nameMean = "|mean"
         let nameSqD = "|sqD" // squared distance from the mean
         // load values
-        let n = logger.integer(forKey: "\(prefix).\(eventName)") // we assume that event was logged before!
+        // we assume that event was logged before!
+        let n = logger.integer(forKey: "\(prefix).\(eventName)")
         var mean = logger.double(forKey: "\(prefix).\(eventName+nameMean)")
         var sqD = logger.double(forKey: "\(prefix).\(eventName+nameSqD)")
         
diff --git a/enzevalos_iphone/Onboarding.Video.Click.Eng.m4v b/enzevalos_iphone/Onboarding.Video.Click.Eng.m4v
new file mode 100644
index 0000000000000000000000000000000000000000..585f4270ef7013a7788b0aa53e8b36f9f457fb32
Binary files /dev/null and b/enzevalos_iphone/Onboarding.Video.Click.Eng.m4v differ
diff --git a/enzevalos_iphone/Onboarding.swift b/enzevalos_iphone/Onboarding.swift
index ab86ca68378a46367aacb6b666338c75aa5e88a2..fbb1282b476b8e6f3232b5178cdb773e4dd510b9 100644
--- a/enzevalos_iphone/Onboarding.swift
+++ b/enzevalos_iphone/Onboarding.swift
@@ -106,7 +106,7 @@ class Onboarding: NSObject {
         //Introduction
         let intro0 = OnboardingContentViewController.content(withTitle: NSLocalizedString("Welcome", comment: "Welcome"), body: NSLocalizedString("ReadFollowingPages", comment: ""), image: nil, buttonText: nil, action: nil)
 
-        let intro1 = OnboardingContentViewController.content(withTitle: NSLocalizedString("Letter", comment: ""), body: NSLocalizedString("LetterDescription", comment: "describe the letter"), image: nil, buttonText: nil, action: nil)
+        let intro1 = OnboardingContentViewController.content(withTitle: NSLocalizedString("Letter", comment: ""), body: NSLocalizedString("Onboarding.ConfMail.Description", comment: "describe the letter"), image: nil, buttonText: nil, action: nil)
 
         intro1.iconHeight = 70
         intro1.iconWidth = 100
@@ -120,7 +120,7 @@ class Onboarding: NSObject {
         UIGraphicsEndImageContext()
         intro1.bodyLabel.textAlignment = NSTextAlignment.left
 
-        let intro2 = OnboardingContentViewController.content(withTitle: NSLocalizedString("Postcard", comment: ""), body: NSLocalizedString("PostcardDescription", comment: "describe the postcard"), image: StudySettings.securityIndicator.imageOfInsecureIndicator(background: true), buttonText: nil, action: nil)
+        let intro2 = OnboardingContentViewController.content(withTitle: NSLocalizedString("Postcard", comment: ""), body: NSLocalizedString("Onboarding.InsecureMail.Description", comment: "describe the postcard"), image: StudySettings.securityIndicator.imageOfInsecureIndicator(background: true), buttonText: nil, action: nil)
 
         intro2.iconHeight = 70
         intro2.iconWidth = 100
@@ -140,10 +140,10 @@ class Onboarding: NSObject {
         }
         
 
-        let path = Bundle.main.path(forResource: "videoOnboarding2", ofType: "m4v")
+        let path = Bundle.main.path(forResource: "Onboarding.Video.Click.Eng", ofType: "m4v")
         let url = URL.init(fileURLWithPath: path!)
 
-        let videoView = UIView.init(frame: CGRect.init(x: 40, y: (AppDelegate.getAppDelegate().window?.frame.height)!*0.5, width: (AppDelegate.getAppDelegate().window?.frame.width)! - 80, height: 1.779*((AppDelegate.getAppDelegate().window?.frame.width)! - 80)))
+        let videoView = UIView.init(frame: CGRect.init(x: 40, y: (AppDelegate.getAppDelegate().window?.frame.height)!*0.4, width: (AppDelegate.getAppDelegate().window?.frame.width)! - 80, height: 1.779*((AppDelegate.getAppDelegate().window?.frame.width)! - 80)))
         
         let intro3 = OnboardingContentViewController.content(withTitle: nil, body: NSLocalizedString("GetHelp", comment: ""), videoURL: url, inputView: videoView, buttonText: nil, actionBlock: nil)