An Error Ocurred

Thanks for your feedback.

Maybe this is related to your report Uploads consistently failing silently · Issue #202 · cryptomator/android · GitHub?
If not please enable debug mode, reproduce the problem and send us the log.

This number of devices for which Cryptomator for Android is proportionally very small and depends among other things on the fact that our minimum android version is 4.3, which is not a high requirement…but there are still devices with a lower version.

Rotating the screen during an upload shouldn’t be possible at all. Can you please provide a step by step guide to reproduce it?

Here as well, can you please provide a step by step guide to reproduce it?

There is a login against OneDrive in the background and therefore the black screen appears with “Authentication” and a progress. If the login is very fast, a black screen is only displayed for a short time and the login continues immediately to avoid unnecessary delays even though the login is already completed.