Ok, so I enrolled, is that all I have to do? Just enroll via the link and start posting?
Yes, if you followed the OP steps, there isn't any problem

After one week, please check if your name appears here:
https://bt.irlbtc.com/view/291387.msg7421598#msg7421598 (it's the current enrolled users list)
But you don't have to "Start posting". You have to continue doing what you've done before but now you're helping the Primedice and you're going to get paid for it
Have a nice day!