Automatic Logout

Good Day,
I am new to WOW and the way it works so I don’t know how big of a problem this is or if it is something that happens a lot. Today each time I logged in and clicked on a server the screen would say it was logging me in. The the screen would change like it was about to show my characters, but instead the log in screen would pop back up and so did the text box saying I was disconnected from the server. I kept logging in again and again, and I finally go in. But for future reference what was going on?

im stuck with the same issue aswell