This error did not result in a mere inconvenience of needing to download my keepass file and open locally. Ultimately I was locked out of my account. The android app failed to recognize my boxcryptor password, then the same happened with web access and the boxcryptor application on my windows machine.
AT THIS POINT I HAVE COMPLETELY LOST ACCESS TO ALL OF MY ENCRYPTED FILES
I created a new account just so that I could login and warn other users as well as make the Boxcryptor team aware of the severity of this problem.
For me, I'm leaving Boxcryptor, cancelling my paid account, and finding an alternative. I can't risk my losing my files on this service again.