Can't log into Elden Ring on Linux?

Title. Game otherwise works great. Windows-using friends say it works for them. Networking is also normal on computer.

I initially thought it could be anticheat related so I disabled mangohud and made sure Easy AntiCheat was launching etc.

But no cigar, the game loads and errors out like in the pic. :

It seems to do so immediately, too, like it's not even trying to connect?

Tried it on my Deck too, same error.

Do not have a Windows PC to try it on, but it's really confusing me, because it ran perfectly until today. :P