[Zubersoft]

If you can't get the Microsoft Store working, then the next best option is for you to use the FastSpring store version which doesn't rely on the Microsoft Store at all. Then you'll just need to copy some files from one folder to another to transfer your library. To start, go to https://zubersoft.onfastspring.com/ and purchase MobileSheets for Windows. You'll receive a link to download and install MobileSheets - run the installer.appxbundle file after downloading it. After the app is installed, run it, then copy the files at 

C:\Users\<your username>\AppData\Local\Packages\41730Zubersoft.MobileSheets_ys1c8ct2g6ypr\LocalState 

to 

C:\Users\<your username>\AppData\Local\Packages\Zubersoft.MobileSheets_m0zk3axhy8w52\LocalState

Now enter the license key you received while purchasing and your library will be available without any restrictions.

Mike