Please do the following:
Remove the cages and the propellers from the motor block until you are left with only the motor block and the exposed shaft. Then go ahead and power up the pump and see if the shaft spins.
Does the motor run?
Does the shaft spin?
Is the pump completely dead?
If the pump is dead and outside of the 1-year warranty period you will need to purchase a new motor block, you can do so here: https://www.coralvue.com/maxspect-gyre-motor-block