World restore after reinstalling the app doesn't work

When I downloaded the update, everything had blurry graphics. Everything was blurry or not really visible. Which is why I reinstalled the app. When I opened the app the worlds were gone, which is normal when reinstalling on Android. However, world restoration didn't work. I opened the folder and selected it. But the whole time the app stays on the "Restoration process begins..." tab, which makes me very sad because I have some worlds that I've put a lot of time into and are also very advanced.