If you could not make one month's payment but postdated a payment on their website can they still repossess your car?
If you are in DEFAULT of the contract, they can repo your ride. Whether they do or not, depends on the lender. Usually folks who are in contact with the lender, make some kind of effort to pay(like you did), get the most consideration before getting repoed. I know times may be rough, but do the best you can and do what you say you will do.