Rain soft Q2 system

First I'd check the system to see if piston is actually moving (white cams turning and all) , it could be stuck in mid cycle. Remove the battery, unplug the unit for a minute then plug it back in, press quit squeeling(quiet alarm). The cams should turn and the piston move up and the rear cam should turn off the unit when the notch on the outside gets to about 9 oclock and the back switch actuater pops into that notch. If the motor is turning and the cams aren't, then the problem is the shear pin on the drive shaft needs replaced due to a problem with the orings on the piston. It could be that the cam follower has broken, if the cams are turning and the piston isn't moving. Is there a broken silver looking thing laying somewhere between the cams?
If all of the above is working, the inlet screen is the easiest to check. remove it and see if that corrects the problem. If you don't have a screen in there, then it's probably the resin bound up. Run it in backwash for 30 minutes and see if that corrects it.

Bypass the softener, flush debris from the well, put the softener back in service and directly into backwash.