Unable to create Marketplace Worlds

I have tried the below steps. I have uninstalled, reinstalled, deleted the folder, and downloaded the worlds again from the marketplace. I followed what I found on the forums but nothing is working. Please help! I can create a new world but none that I have purchased from the marketplace.

1. Uninstall Minecraft
2. Delete the com.mojang folder (Device storage > games > com.mojang)
3. Reinstall Minecraft