i started and im a yellow belt now but im having an issue. when i join any server it says i dont have a connection i have a connection so what do i do?

Try joining the higher belt servers or a public server. What happens then?

Yep, you need to join other rooms then Beginner, since the beginner servers are only for white belt accounts.
Try Semi-Pro and Intermediate servers, they should work.

Okay im going to try thanks for replying