Lag in Rewards / Game Tiers

The current tier being displayed for both my Forza Horizon 2 and Forrza Motorsport 5 Rewards accounts in the Forza Hub (both on the Web and in the XB1 app) are lower than my actual tier in both games. For example, my Rewards tier is currently 4 in the Hub, but in FH2, I’m deep into tier 5–or so it appears to me. I thought it might be a result of some of the issues reported on during the rollout, but those seemed to have been about the speed with which rewards for existing tiers were making their way to members, and not about any discrepancy between Reward tiers and actual game tiers. Am I missing something here?