I tried a different connection with a different device too. It is not a paid Home World Transfer that i did, it was just a world visit to Leviathan from Balmung and came back fine. Since that day i was never able to log back in the game.

I already submitted a bug report and a support ticket, they have asked me to make a forum post after nothing was helpful. Problem still there I just tried to login today.

Thanks for your help though.