I am using Enpass on the following devices:
Android 10 QKQ1.190825.002, Enpass 6.6.1.449 (sync only working when SSL verification ignored)
Ubuntu 20.04, Enpass 6.5.1 (723) (sync only working when SSL verification ignored)
Win10 Pro 10.0.19042, Enpass 6.5.2 (724) (just checked it again and surprisingly the sync was working with SSL verification)
So currently it looks like the linux based devices are facing the issue. When configuring without verification, got the following:
On Android I even got the error code 904060. When I check "ignore verification of SSL certificate", it works like a charme:
The WebDAV in Browser is working certificate-wise, but there is a known problem with the QNAP NAS WebDAV, that opening it in a Browser will result in "Forbidden".
When I test it in my Nautlius with davs://.... it works very well, as you can see here:
I hope the information are helpful and you can figure out what is happening here.
BRs,
hummels151