NAME

Put the summary of the bug you're having here

What I expected to happen was...:
to change my name to Cheaxr first time it sayed "this name is already used" then i did _Cheaxr and it was ok then i changed it back to Cheaxr and it sayed ok

What actually happened was...:
When i tried to join ANYTHING it wouldnt let me in

Steps to Reproduce:
1. put name already taken
2. Change it to one that isnt taken but similar ( like putting an "_" )
3. Change back to the one wich is already taken