Thank you for your patience on the issue with the game reinstalling multiple times per week. This is a confirmed bug in Windows 10 with ClickOnce apps. Microsoft is rolling out a fix that will take up to 24 hours to reach all users worldwide.
A clean reinstall of MTGO shouldn't be needed once the fix is applied. A Windows reboot may speed up resolution.
A clean reinstall of MTGO shouldn't be needed once the fix is applied. A Windows reboot may speed up resolution.