You should ask to vip host but I suspect it's related to your winning activity did you win something big while hunting the 2.3% wager?
I still remember when reaching some levels sometimes I don't get the recent win bonus and indeed I didn't win anything big just playing dice for wager
IMO.
My bet activity wagering for the rest 3% almost the same as my "Platinum 1-2" while need around 5-10% left, I don't big win because is only chasing wagering and take some loss to rank up.
But, I got good recent gameplay comparing "Platinum 3".