Welcome to TFP.
I suspect your spa suction actuator is not turning.
Identify your suction actuator and return actuators. If you can't then post complete pictures of your equipment pad, not just one showing a jumble of pipes going to unknown places.
The actuator has a 3 position toggle switch on the side of bottom. The positions are 1 - OFF -2 , Confirm the switch is not in the middle off position. Then is is position 1 switch it to 2, or if on 2 switch it to 1 and see if the actuator rotates. If not the actuator is broken. If it rotates then put the switch back in the original position.
Report back what you find.