Windows 10: Minecraft Win10: Can't access worlds for purchased templates

All of a sudden, started getting the following error message when trying to log into my Minecraft worlds in Win 10:“this world was created using a template that you have not unlocked"I am logged into the correct account. I purchased these worlds. I can even see my charges when I purchased these worlds. The marketplace seems more than happy to sell them to me again. Any ideas on how to fix this? Thanks!

:)

 

Purchased Minecraft content is missing

EDIT: It got fixed

Hello. I purchased minecraft windows 10 edition and some minecoins. I tried to purchase some items , sometimes I had problems and I fix them by ressetting the app. Now I can't access to my template world Even I have purchased it , sign in to the xbox account
that I purchased it in. Now what can I do?

 

Minecraft Windows 10 Edition Lost Worlds

 

Missing world is in my folders but not in Minecraft W10 world list.

I have this one world on minecraft windows 10 editon that disappeared from my world list when my laptop froze and restarted. Upon going back on minecraft, the world disappeared. I've looked in the worlds folder and its still there, but its not on the world
list. What should I do to get it back on the worlds list? PLEASE make sure your answer deals with Minecraft WINDOWS 10 EDITION and not the JAVA EDITION please.