Hi Ralph42, Hi BumbleBee,
I'm sorry to hear you have trouble with Boxcryptor. Please contact support@boxcryptor.com supplying a debug log and with a reference to this forum thread.
A debug log can be created like described here:
https://support.boxcryptor.com/display/BCWINEN/How+to+create+a+Debug+log
Kind regards,
Florian