Bought xbox pc gamepass and downloaded R6 but wont it wont open anymore

If this problem only occurs with games that are on the Game Pass subscription, then you would need to contact Xbox Support directly to see what the problem is with your Subscription.

I understand, if you can play other Gamepass games then the problem itself is with the specific game, therefore it would be as you say about Ubisoft.

Yea, the xbox gamepass subscription receipt and it is completed. So i dont think its with the payment

Hi Nguyen D, I'm sorry to hear that the problem persists. So we can validate ownership of your game, please check your account order history https://account.microsoft.com/billing/orders/ if you can see your game order there, which says completed. If you couldn't find it there, it may be linked to your other account. You can check your other accounts or emails to be sure.

I am signed into the same account that i have xbox gamepass on but the only game i cant play is rainbow six siege