Sea of thieves not on Xbox Gamepass ?

So a couple of days ago when I started up SOT to play, i ran into an error stating that i do not own the game. which is weird because my gamepass subscription ends at the 17th of march. I tried most of the fixes i found online, logging in and out of Xbox, microsoft , double checking if i still had the gamepass on the same account, restarting the Microsoft license service etc.. but still no luck i was still getting the same error. then i contacted xbox support and they didn't really give me an answer but they just told me to redo all the fixes i did and i re-did them with no luck, the final option was to reinstall the game. but once i uninstalled it and went on the Xbox gamepass to download it, it now tells me i must buy the game. Now I'm stuck with no support from Microsoft nor Xbox. Microsoft told me that it is a region issue but all my regions are the same everywhere and it doesn't make sense that just the day prior to me getting that error i was playing normally with my friends

:)