MSFS2020 says "insert MSFS game disk" when I'm using Xbox game pass ultimate

Complete given below directions to reset and repair the game

Step 1: Open the Settings app. This can be done by clicking its icon in the Start menu or simultaneously pressing Windows logo + I.

Step 2: Click the Apps category icon and then click Apps & features to see all installed apps as well as classic desktop programs.

Step 3: Click on the app that you want to reset to see the Advanced options link. Click on the same (advanced options link).

Step 4: Finally, click the small Reset button. When you click the Reset button, you will find a small dialog box with “This will permanently delete the app’s data on this device, including your preferences and sign-in details.” Click the Reset button in the opened dialog box to reset the app.

Step 5: Once the Reset is done, you will see a check sign next to the Reset button. And restart the Pc

If this doesn't work you could try to reinstall the game

I've make sure my subscription is still active (2 weeks remaining), I've tried relogging in the Xbox app and the windows store, restarted my computer (3 times now). The discord and reddit helpers said they had nothing left to do to try to fix it.

Hi Dan_L! My name is Ricardo an independent advisor ready to help you with this situation!

Please confirm the account that has the subscription active here

https://account.microsoft.com/services

If the account has the subscription active please use that same email in the Microsoft store app (not the Xbox app), the best will be log out, then restart the Pc and log back with the same email as in the services site

You are not forced to use ultimate. If you wanted to go back to Xbox Live Gold you needed first to cancel the ultimate subscription, and then insert the code. For all users, with xbox game pass ultimate active, when you submit a xbox live/xbox game pass
for console/ xbox game pass for pc codes it will automatically convert in xbox game pass ultimate months using the established ratio.

Thanks. Managed to download the game. I insert the disk and says I need to insert a disk or buy the game?