I was having an issue with Forza Rewards not correctly registering many of my FM7 stats like cars owned, driver level, etc…including Gamerscore…the rest updated accurately, at least they hit max, and I was able to progress to Tier 8, but my Gamerscore never changed and is still reported incorrectly.
It is also not giving my my credits in FM7 and I do not believe it gave me my “upgrade credits” when I advanced (many weeks later than I should have).