Weird .htaccess behavior

[TGates]

It won't work since there is no virtual host for the domain/sub domain for port 80.
As explained in the Docs and in the How-To forum:

On Sentora Panel go to Admin -> Module Admin -> Apache Config > Override a Virtualhost [Select domain] ->
Tick Port Override.
Forward Port 80 to Overriden Port: 443

Wait for the daemon to run (~5 minutes).