I have been trying to create a server but every time I try to, a message pops up saying its either full or misconfigured. I know I configured it correctly, what seems to be the problem?

If you get disconnected from the masterserver, its either a port forwarding error or old server. Otherwise there is a bug in the current vanilla server that won't let you join a 1-slot server.

I got the port forwarding correct.Its 32887 Right? I put it as both the end and starting port. Or should it just be the starting?

Ok I see the server on the list. But its showing the message again