EThe version on server and Client are the same, all my friends can join wiht it exept me. Why is this so?

What specific error are you getting? It would also be good if you can include the full log from both the server and your client

I can close the issue now. I found the problem, it was a incompatibly with the server and client caused by wraith-alloy-forgery and Dimensional Doors. The server was missing a mod, not the client and owo for some strange reason had a problem with that

and owo for some strange reason had a problem with that

The entire point of the OwO handshake is to break when network packet channels don't match 😛