“The virtual key isn’t paired with your car yet”

The car doesn’t know the Copeel key: it was most likely removed from the car’s screen, under Controls › Locks. Without it, Copeel can neither receive the car’s data nor send it commands.

The key is created while adding a vehicle, which only offers it for a car that isn’t being tracked. To create it again:

1. Open Profile › My Vehicles, tap the car, then Unlink Vehicle and confirm. Its history is kept.
2. Tap Add a vehicle, then Continue once you’re connected to Tesla.
3. Tick the car: it shows “Virtual key to create”. Tap Continue.
4. Tap Create key and confirm in the Tesla app.
5. Tap Start Tracking, then Done.

The car is tracked again, with its history. See also The Copeel virtual key.