All fixed
FYI for Stagea owners and probally most wagon boot setups:
It ended up being the latch that wasn’t working rather than the motor that pulls the boot shut.
FYI if your looking to pull off the inside cover to the boot, the plastic part that goes around the window (mine is grey) has no screws it just popes in and out. The carpet section has about 8 little screw type things that go around the sill. Assuming you can’t open the boot (like my issue) you can pop off the plastic cover and pull the carpet section back and push down on the latch at the bottom and the boot will open.
Basically there is a metal little arm that pushes down on the lock as you lift the latch. Mine had fallen out and was sitting at the bottom of the door.
Cheers