Problem with change server

How do I switch and go to the new European region with the new servers if it gives error the server do to heavy traffic and takes me out of the game?

Yeah, i do have the same problem. Nice to see that they addes a new region for us, the players, but this is nonsense if u can’t even connect to the game due to ERROR 10027 to change the region.
Also i don’t think many players will switch regions unless they just started playing.
I almost hit lvl 50 and don’t consider switching since it takes time to get to the endgame.
They need to make character transfers available and fix Server traffic issues !