You should be getting an email from Zillow when someone signs in. If you cant figure it out check with your rep they have had good tech support.
Call 888-957-2706 Zillow.
Call 888-957-2706This is the phone number I have for Zillow Good Luck.Lisa
I have found if the selling bank wants you to be prequalified with them and you are not they will usually go with a buyer who is. Even if you get qualified with that bank you have the right to choose who you get your loan with. Your REALTOR should be able to answer all your questions. The bottom line is you should not pay more than you can afford and don't offer more than the house is worth. Good Luck