@Cecu
Most likely the other application is registered as URL handler for tidal instead of strawberry.
Open a terminal and type:

xdg-mime query default x-scheme-handler/tidal

To find which application is registered for Tidal.
If it's another application you can temporary remove that desktop file (usually in /usr/share/applications/).
Also make sure that the desktop file for strawberry is correctly installed (org.strawberrymusicplayer.strawberry.desktop).

@jonas when is this likely to be? as i'm not happy going through the Windows mixer as it ruins the sound.
I'm quite happy to test out beta versions if you want a tester?
As it stands now I have bought the latest version which gives me no benefit than to the last free one for my use case.