Windows 10: Minecraft Windows 10 Edition worlds disappeared.

I was on Minecraft beta and I wanted to go back to normal, so I copied the worlds and uninstalled Minecraft. When I went to re install it, a message popped up saying "Try again later". It did this for 8 hours, then I got it to work. When I loaded it up, all my worlds were deleted. I spent a total of about 10 hours on one of the worlds, can someone help?

:)

 

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.

 

Minecraft Windows 10 Edition World Disappeared and no Tutorials Worked

So I use an Asus with Windows 10, and Minecraft Windows 10 Edition is installed on it. I was playing Minecraft the other night, and it crashed. I opened Minecraft back up to discover my main world disappeared! I need help because this is the main world
I use, and the best I got was a Frankenworld where 2 seeds collided and it got rid of a good chunk of my base. I looked up tutorials on how to do this, and after that first attempt it hasn’t done anything to the new attempts. Thanks!

 

Minecraft Windows 10 Edition Lost Worlds