@bobbyD
I had to reinstall the Hubitat app and noticed that the prompt to ask for permissions is causing it to crash on my phone. The first crash happens when asking for access to Network Devices on initial app launch. Reopening the app fixes that one and the "Allow" Prompt pops up.
The second one is when you try to start SmartStart - it crashes immediately (assuming as it is about to ask for camera permissions). Restarting the app does NOT resolve this one so SmartStart is essentially unusable on my iPhone.
Edit: Forgot to include troubleshooting performed: I removed the app again, did a hard restart of the phone and then reinstalled the Hubitat App. This did not resolve the issue. Haven't performed any other troubleshooting yet.