Game pass quest not submitting

I see, can you try deleting your accout´s cache?

Delete account Cache

Remove Account:

1. Press the Xbox button.

2. Select System > Settings > Account > Remove accounts.

3. Select the account that you want to remove, and then Remove.

4. Close.

Power Cycle:

1. Turn off your console by holding the Xbox button on the front of the console for approximately 10 seconds. The console will turn off.

2. Wait for 5 minutes and then turn your console back on by pressing the Xbox button on the console or the Xbox button on your controller.

Add Account:

1. Press the Xbox button.

2. Select your gamerpic in the upper-left corner of the screen, move all the way down and select Add new.

3. Enter the Email Address and the Password.

4. Read the Microsoft Service Agreement and Privacy Statement, and then select I Accept.

5. Follow the steps to configure your Sign-In & Security preferences to add your Microsoft account to your Xbox console again.

Tried still the same thing

Ok, in that case you might have to contact Microsoft Rewards support

https://go.microsoft.com/fwlink/p/?LinkID=823675

Hi,! I'm Luis, a fellow Xbox Gamer . Thanks for reaching us out here.

Let´s first try a full power cycle

Turn off your console by holding the Xbox button  on the front of the console for approximately 10 seconds. The console will turn off.

Once the lights on the front of the console, unplug the power cable from the rear of the console.

Wait at least 30 seconds.

Turn your console back on by pressing the Xbox button  on the console or the Xbox button  on your controller.

After that check your quests

Hi there.

Yesterday was the last day to submit quests for Game Pass for the last month. It will be updated later today with new weekly and monthly quests as well as the usual daily, weekly and monthly quests.