You should have received an email and a message with more info in Creator Studio, including detailed resources and next steps. Note: if you were removed from YPP for policy reasons, you can always reapply in 30 days.
This has happened twice before and I always get the same information which has always turned out to be wrong, I’ve not made any changes to my content & you’ve not made any updates to your policies, so I would really appreciate if you could take a second look & review it again.