https://wccftech.com/apple-fixes-ios-13-5-app-store-bug-that-prevented-users-from-opening-certain-apps/

Last week, a strange App Store bug was preventing users from opening certain apps. When trying to launch applications like WhatsApp or YouTube, an error message was prompted that read “This app is no longer shared with you.” Moreover it and directed users to buy the App from the App Store. While it was pretty annoying, we also detailed a workaround that involved offloading the app. However, it wasn't the proper fix for iOS 13.5 App Store bug and now Apple has stepped in and resolved the issue for all users.

The bug turned out to be quite a nuisance for users as it blocked them from opening and using different apps. Users had to uninstall and install the app again in order to make the apps work and while being quite a task, there were chances of the data being deleted. Over the weekend, numerous iOS and iPadOS apps were updated and apps that were updated from up to 10 days back needed to be updated again. Major publications also pointed out that it could be a signing issue as well.