Microsoft Sudoku has once again lost my progress on daily challenges. Please advise when this issue will be fixed and my progress will be restored.

Well, the simpler i've found at least

"Simple" workaround?

There is a simple workaround to synchronize the save in cloud:

1. Do your daily challenge on pc, click done when finished.
2. Open microsoft sudoku on a device (android or ios) with same login and begin a challenge (then exit)
3. Click on your Level / Login name in Microsoft Sudoku on the PC (it will open the Xbox app) and when you return to microsoft sudoku it will say it's not synchronized and will do the trick.

I have tried restor I have deleted the app and reinstalled it but my daily score is still not being registered

I have the same issue AGAIN.

Fixed in March and "into" April.

NOT working again on my WINDOWS 10 version laptop.

My Sudoko works fine on Windows 11.

I NO LONGER TRUST Windows 11 and refuse to "upgrade" until the Windows 10 Suduko error is fixed/