Windows 10: Microsoft Jigsaw Collection download packs disappear

So, I was doing the "dogs" pack, which took me forever to get gold to save up for, and I minimized the window, went back, then my collection was gone. I still had a puzzle on it to finish, but when i did, it was gone. Please help. And yes, I've tried restarting my computer and installing updates.

:)

 

Problem with Microsoft Jigsaw

I am unable to access downloaded puzzle collections in Microsoft Classic Jigsaw for PC. The collections are not included in the "My Collections" list once I choose Classic Jigsaw.

 

Microsoft Jigsaw - unable to download purchased collections

Not exactly the same problem but points were deucted from me but the collection that I applied for cannot be found. I have been advised to look in 'Downloads' (obvious really & already done), also to run 'Store Troubleshooter' or search 'Drive C'. No help
from these either.

Also on the page showing collections, if I select show "All Collections", I am taken out of 'Microsoft Jigsaw altogether and have to reload it.

Before I try to download another collection can anyone suggest where the attempted download could be?

 

Microsoft Jigsaw Will Not Load

I was getting Error Code: 0x803F8001 both before and after "uninstalling" Microsoft Jigsaw. It worked perfectly for years, but stopped working within the last week. It would start to load, and eventually bomb out. I have tried the following suggestions:

• Uninstall Jigsaw. Now I cannot reinstall Jigsaw. Get Error Code: 0x803F8001
  

• All steps above from Jomari Arc . Step #4 took longer than expected, but it did eventually do what you
  said. These steps did not allow me to reinstall Microsoft Jigsaw.

• Microsoft Windows Store App. Troubleshooter - It ran and said it fixed a "possibly corrupted cache" . This did not allow me to reinstall Microsoft Jigsaw.

In a similar community, titled "Microsoft Jigsaw Error code Ox803F8001", I tried all of the steps from Loraine Mon, from this link: Redirecting

Again, this did not allow me to reinstall Microsoft Jigsaw. Messages are "downloading", then "acquiring license", and then it errors out with Error Code: 0x803F8001

Day after day, same problem. Xbox and Store and Solitaire all work fine. Microsoft Jigsaw is the problem. When it was installed, it bombed out trying to open. After "uninstalling", it will not reinstall.