A few days ago I temporarily deleted my Android device so I could register a new PC on Boxcryptor while keeping my old PC registered. Once that was ok I removed the old PC. When I reloaded the Android app version 2.59.575 on my Android device and tried to make Google Drive the provider it would not work. All I get is an error 403 notification:
"This user-agent is not permitted to make an OAuth authorization request to Google as it is classified as an embedded user-agent (also known as web-view). Per our policy, only browsers are permitted to make authorization requests to Google. We offer several libraries and samples for native apps to perform authorization requests in the browser."
Then the error message provides a link to a long post on Google Developers Blog: "Modernizing OAuth interactions in Native Apps for Better Usability and Security - Mon August 16 2016"
That suggests to me this problem has been warned about for a long time. I have tried uninstalling and reinstalling but the same error repeats every time.
If there is no fix I cannot use Boxcryptor any more.