Whenever I create a party, my friend cannot join: After they input the code, they get a message like "oops, looks like you're lost" (in FR: "Oh non vous etes perdu") but there is no error in the console. We tried many things but nothing worked. It's been buggy for a few months now.

On my side, I see them in the player list but grey out. (see attached image)

On their side, the error keeps appearing even if they leave the page and come back or hit F5 or clear their cache, etc.

The error happens on their side until I dissolve the party on my end.

It's really a shame because I'm still actively paying for a premium subscription.