If the Nomorobo Extension does not appear in your settings, or it's disabled, here's what you should do:
1. Open the Settings App
2. Force-quit (swipe up) the Settings App
3. Uninstall Nomorobo
4. Reboot iPhone
5. Reinstall Nomorobo
If the Nomorobo Extension does not appear in your settings, or it's disabled, here's what you should do:
1. Open the Settings App
2. Force-quit (swipe up) the Settings App
3. Uninstall Nomorobo
4. Reboot iPhone
5. Reinstall Nomorobo