Well Im an ambassador, my XP was all done to become level 3 but i needed 6 days tenure.
After waiting 6 days, My xp got totally reset but my tenure didn't. So i contacted xbox support on twitter and thats fixed now.
But I can't get on the private ambassadors forum, didn't try it before so don't know if that changed. And i also haven't recieved my level 3 rewards.