With the new rank sync being added I thought I would make a little guide on how to do it, its pretty simple and shouldn't take too long, if you are already signed in with steam then all you should need to do is re-log in game and your rank should appear on the forums. The only ranks on the forums for non staff is either Members or UltimateVIP regular VIP does not hold a rank.
If you signed in with your email and didn't sign in with steam what you will want to do is go to account settings located just above shoutbox and next to your profile box, in a drop down you will see account settings, click onto account settings.
After clicking onto account settings you will be redirected, once at this page you will want to click on steam integration, and click sign in with steam once you have signed in with steam all you will need to do is login to the server and refresh your forums page, you should now have your desired rank in game and on the forums, if you do not then try re-logging on the server then refreshing the website once you have connected.
Hopefully this will help people out who are stuck on what to do with the rank sync, if you have any questions feel free to post them below.