app won't load since ios update

Restart the phone.

Then check for update for the app in App Store.

If not, contact the developer

How to contact an app developer - Apple Support

This is the process:

1. Apple issues developer beta iOS version with developer release notes.
2. Developer tests their app and must make changes before public release.
3. Apple releases the public release

Still think it is an Apple problem?

Contacted developer, it is an Apple issue. The only way to use the app is to uninstall and then reinstall Everytime you want to use the app. Apple needs to fix this, it’s their update that’s causing the problems.