Bug (Android): after giving wrong passwd at login, the login button disappears entirely
1. Open F-Secure Key
2. In landscape mode, enter the pw incorrectly. Hit Unlock.
3. Key complains about wrong password, obviously.
4. Enter passcode again.
5. Notice, that the Unlock button is missing. Can't log on.
Quick fix: kill the app, restart the app. Enter the passcode right. Repeat killing the app until you get the pw right.
App version: 4.5.5
OS version: 6.0.1
Device: Samsung SM-T715Y