Probably just need to reset the window because they might have unplugged the battery. Just press and hold to roll up or down and keep it held for a few seconds and it should start working like normal ??
I don’t have one but theirs a guy selling one near my area through offer up for 20$. You could ask if he’s willing to ship
Check out this item on OfferUp. https://offerup.co/mupqa1sgKLb