I got a server yesterday but i can't play, no one can but they can see it

I got a server yesterday but i can't play, no one can but they can see it
*What I expected to happen was that my cousin and I should be Able to play with eachother.

What actually happened was...:
I whithlisted him, He COULD see the server but couldnt join it. Same thing happened to me and 2 of My friends when we tried to join, it just says "unable to join server, check if you are invited."

It seems like i've got an unregistred server, that is still "working" as a server but unplayable. So if the developers can't fix this i want to delete the server from My list in the realm thing. How do i delete it if its not possible to fix?

Steps to Reproduce:
1. To trigg this bug you have to have damn luck and get a slot when the pocket edition developers release them, yesterday it was a 100.