Is condo association violating ADA rights of visitor with disabilities?

I am helping my cousin take care of her 94 year old mother, my aunt. I live in the Townhouse that my aunt owns. She is an arrears with association fees. She has been trying to make an arrangement to make payments but they want some ridiculous contingencies. Recently the head of the association has stated that the driveway (which goes to the garage) cannot be used by anyone of us because we are "not in Good Standing" and it is "limited common property" and that the cars will be towed. Also I have a Valid Handicap Placard and tonight they tried to tow my car from the handicap spot. The police stopped it but told me that I could not park in the handicap spot because it is part of Association Property. Did I have my ADA rights violated? And what about my aunt who is disabled. Once when an ambulance was called for the Association Head wanted my cousins car towed because she parked in a guest spot so the ambulance could get in the driveway? Isn't he restricting the care of someone who is disabled and Violating ADA? Thank You