bro how you have 600 messages and you still memberWell now that you have it I think it's pretty clear to you that rank ups are probably done manually in this site since they have to check for spams messages or other rules you might've broken while trying to reach that rank
You need 300 messages before you wait.Hello forum users, why do I have 300 posts, and 7 days in the forum, but I don’t have a Prime Member? I've been waiting all day