Paid Apple Developer Account but developed app not working after 7 days

My organization have bought the apple developer account(Apple Developer Program, the $99/yr one) for developing an internal IOS app using XCode15. We intended to install the app on our iPads and let it available for at least half a year. We do not want to distribute this app publicly. However, even if using the paid developer account, the app is not anymore available after 7 days.

My questions are: doesn't the paid developer account allow for developing private apps without this 7-day availability limit? If I actually misunderstood, then how to get the app be available for a much longer time without keeping reinstalling it from Xcode?

It seems like the app is not signed correctly or associated with your developer account.

See: https://stackoverflow.com/questions/38307356/iphone-app-under-test-crashes-after-a-few-days

Check the validity of your app's provisioning profile in your Xcode project.

Paid Apple Developer Account but developed app not working after 7 days
 
 
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