HarperLeeMockingBird

Hey, So I upgraded to premium around 3 weeks ago, mainly because of the 10% access to busy events. Anyway, do I have to wait for like a probation period before this kicks in? I've already got the added group list and my account says I am premium but I have so much trouble still getting into events, even though I have noticed on the map it shoots from 40-47 and when it stays at 40 for a while it is still telling me it is full. (It stays at 40 for a good 20mins or so too). Thank you