Does your prop spin freely when not connected to electrics

EFOIL.builders Propulsion System (Motor, Gears)
1

I think my gearbox or motor might be seized,

Does your prop spin freely when not connected to electrics

I have an early Flying Rodeo prototype that has not been used for two years and the motor shaft has never spun. I wonder if it is seized?

2

Even if it has a gearbox, with the prop mounted it should be possible to turn it by hand. Without gearbox it takes less effort.