There has been many threads made about this topic. Generally just msg @K e v i n on FORUMS in pms about it and it shouldn't take too long. He'll probably just need confirmation it's you and your steam account (which I can see is linked, and if you have a discord he can give the rank to as well). To answer your question about the commands I don't know if there's necessarily a list but the most common ones are /ccc ( which changes Tag Color, Name Color, and Chat color), /kson which gives you a 100 Killstreak. Besides that you should have donator slot reservation, a message whenever you join that you're a donator when you join a server, better rtd chances for a good roll and hats on dispensers for engineer and such. I'm probably missing a few things, but I can't be ask to look at all the perk listed.