Hi Helen, thanks for the quick answer. I think I will need to read up on those key file things. Are those files encryption keys? Ok, so it seems like simply accessing the encrypted files (in cloudstorage) from the cloudstorage providers webinterface will be impossible, right? I will always have to sync the whole folder to either a local PC or an Android phone, exactly? Can you confirm, that I can decrypt the files by syncing them with the android client? Will this decryption work reliably and quickly on a phone at all? (limited ressources of a 2015 Android phone with Snapdragon 810 soc) As for your comment about never removing the encrypted folders ... what exactly do you mean by that? I will never be able to remove those files or the whole folder from cloud storage ever??!? Maybe you guys can add another howto to your documentation about all of the practical issues with encrypted folders and accessing files in them. Maybe others will find this helpful too. Thanks, Alex