Not sure if this belongs here, but...
every time I try to join a game in multiplayer it says I am banned by the server and can no longer play on the server. Could somebody tell me what's going on?

What platform are you playing and which GR title?

I'm playing GRAW 2 on PC.

There are many reasons why you could be banned from a PC server, probably the best thing would be to post in the PC Forum and hopefully someone there can assist you in pinning down the precise reason.

They will probably ask which servers are reporting you as banned so it will be helpful to have that to hand, also the precise message received when being advised your banned etc