i just purchased the android app because I expected to use cryptomator for backuping or syncing some files from my phone to my nextcloud in an encrypted vault. but it looks I can only use the app as an additional filemanager without the possibility to automatically encrypt and upload files from my phone, is that correct?
looks like its a duplicate of Uploading folders on the Android version? what a pity that this essential feature is not implemented and seems not to have priority 
in a way, its essential the same as the automatic photo upload