Thanks for that info and choosing the Apple Support Communities. If I understand correctly, you are unable to delete an iMessage app that wasn't working as expected. To help with this issue, you can use these steps to delete the app.
Manage iMessage apps
You can add apps to your Favorites so you have quick access to them in the app drawer. You can also reorder apps in the app drawer, remove the ones you don’t want, and more. Here’s how:
- Tap to open the app drawer. Then tap .
- Tap Edit in the upper-right corner to do the following:
- Tap Done.