Android phone - change device name

Good Moring All
I’ve just upgraded my phone and installed the companion app.

The phone initially set its device name in the companion app to op13
I renamed it in the companion app to Grant - op13. this has changed the device friendly name in HA to match but all the associated sensors are still just op13.

This is having a similar effect to this thread where notifications aren’t working.

I can’s seem to find the option to change anything other than the friendly name
Do I need to delete it and start over?

That is what I would do. Follow the steps below.