Disconnected from server whenever I try and wake up

As the title says, I can seem to join any server I try. I have uninstalled and reinstalled a few times, have tried on both windows 7 and windows 10. there is no issue with my steam or with my internet connection. I don’t know what the issue is…
the game loads perfectly, but when I press any key, nothing happens for a while, then I get disconnected from the server.
Any help?

I cant refund this game as I got it ages ago and used to play all the time on the old version, before it got replaced.

Thanks.