Storage won't load?
When the repository is opened, an infinite calculation of categories occurs. Previously, everything was fine, loaded and displayed, help with this problem, please.
The range of the mobile network is not strong enough.
You have to solve that first.
Do not wait until 'No service' appear.
See this Apple article: If you see No Service or Searching on your iPhone or iPad
https://support.apple.com/en-us/HT201415