Just to add some more details, with screenshots.
Initial setup screen, with Client ID (image 1)
Successful login via web page (image 2)
Popup asking to open link in xdg-open (image 3)
At the moment xdf-open is opening the file in Brave browser, in which I have the web Tidal Hi-Fi app installed (https://github.com/Mastermindzh/tidal-hifi)
However, when I tried to select Strawberry player to open that file/link, nothing happens. Strawberry players still shows that I'm not logged in.