Authorize.net SIM Module - There has been an error processing your credit card. Pleas

[anita]

I just had a chat with authorize to see if I could get the md5 hash cleared:

You have been connected to Brandon S.
Brandon S: Hello anita! How can I help you today?
anita : Hi Brandon, I am running a zen cart shopping cart and according to the zen cart forum there was a change in the API going from 2 decimal places to 4 causing the Hash value to fail. I had the problem several times yesterday.
anita : I would like to change my hash value to blank, but I can't seem to get it done
Brandon S: This can not be disabled in your account. If you do not want to use the md5 hash you need to disable it in your shopping cart.
anita : I did change the md5 hash to blank in the cart, but since I have a value set up here I thought there would still be an error. Is that not true?
Brandon S: No that should not be the case. All you need to do is disable the md5 hash in your account.
Brandon S: Sorry in your shopping cart.
anita : Ok thanks I'll give it a test


It did NOT work