I did find a solution online that might help someone else.
- Logged out of the Bambu Slicer and uninstalled it.
- Logged out of Bambu Handy and deleted the app
- I did factory reset on both P1P and X1C
- I reinstalled Bambu Handy and logged into my account.
- The app found both printers and asked if I wanted to Bind to them > YES
Done & Fixed.
I don’t know what caused this, one day the printers are working and next they didn’t.
But working now.