Affinity will not spin with any load

Clothing comes out poorly rinsed and wet.
With no clothing:
Wash water level is 2.25 inches in the drum for normal and max fill.
At the end of each cycle, water pumps out quickly.
Rinse water level so low that it doesn’t show up in the drum.
Spin will occur after wash cycle and at end of last rinse with an empty drum.
Put in any clothing (small, medium or large load) and no spins occur - just tumble and reverse direction of rotation.
Looked without success on the internet for a service manual.
My wife hates the machine. Can’t afford another one.
Help!