Download Failed

[Briefly describe the bug here]

Steps to Reproduce:

1. Bought world
2. Hit Download 
3. Says "Download Failed"

Observed Results:

When I try to download a world, it starts the download but then at random times it stops and says it failed to download.

Expected Results:
World should download and be playable

Screenshots/Videos attached: 

Notes:

I have uninstalled and reinstalled Minecraft, checked for updates, looked for bugs, etc.  It only happens to 3 of the 4 worlds I purchased together.