I'm currently testing the Enpass 6 beta out on Linux and Android.
Linux works fine so far but Syncing via WebDAV on Android fails with the error message "Something went wrong while syncing via WebDAV. Error code: 908503".
I tried a lot of things but nothing worked:
Creating a fresh vault and syncing it to a new folder
It creates the correct folder structure on the cloud but no "vault.enpassdbsync"
Creating a fresh vault and syncing it to an existing vault
Restore works but subsequent syncs fail here
Cleaning all data on device and reinstalling
Detaching from sync and reattaching
Reattaching works but then the same error comes on sync
I use NextCloud for WebDav with "https://<url hidden intentionally>/remote.php/webdav/" as URL and neither checking "Bypass SSL certification" or not checking it makes a difference.
Hope this helps