New Laundromat Owner having trouble with a SPEED QUEEN

So, a customer put a bunch of rugs in a top load speed queen washer. It stopped mid cycle. The belt seemed fine, but it wouldn't drain. After messing around with it, it started working out of the blue and finished its cycle. I thought maybe the lid switch got out of wack and I fixed it by messing with the lid? Put some more quarters in to test it, and it filled up with about an inch of water and did nothing else.

I'm a new laundromat owner, and was a stay at home mom before this, so I'm kinda clueless. Does anyone have any idea on how I could fix this? What might the issue be?

TIA!

via New Laundromat Owner having trouble with a SPEED QUEEN
by Rachael