There could be any number of reasons this happened. The only real answer anyone here can give you is that you need to speak with a lawyer about the situation and see if you can appeal it. Since you are disabled and homeless, it is very likely that you can get a free attorney through legal aid to assist you. I suggest you search legal aid YOUR CITY and see if you qualify.As far as an answer, you might have filled out the forms incorrectly. The judge may think you should be making or receiving enough money such that you can afford $237/month based on any number of facts. Or the judge even may have made a mistake. It happens.