@konibo@mastodon.uy hm, same version as me
Which OS are you using? Are you using the Flatpak?
Double-check your ListenBrainz token, and make sure "MusicBrainz" is on in the Privacy tabs of the Lollypop settings.
If that fails, maybe post something on their Gitlab? They have been very responsive in my experience.
If you are using the Flatpak, you can have a look at the log with:
flatpak run org.gnome.Lollypop --debug
Maybe that reveals something interesting, the scrobbling feedback is fairly readable.