I have tried to post my ad about my car several times through several devices using several different browsers, yet the process always ran into the same website glitch, an eternal spinning sign of "in process".
NO ONE from autotrader gets back to me with a solution and a phone call is not possible. What kind of service is this?
They don't deserve any clients, I recommend avoiding them.
(just for the record, I'm not web illiterate, I used to be a web developer and am an engineer)