Hello,
I've been using a test account and all was ok. Now I'm trying to use a real account....but when I try a payment, after I click 'Submit' in the Secure Hosted Payment Form, in the next page I get just the text 'Invalid'. There is no reason response code.
I've downloded the SIM Php sample and set the variables $loginID, $transactionKey; I've set $testMode = 'true'; and $url = "https://secure.authorize.net/gateway/transact.dll";
Here is a screencast video of the issue: http://screencast.com/t/CYOr8XoQ
Debugging info:
1. It is posting to https://secure.authorize.net/gateway/transact.dll
2. the transaction key is valid. I've just regenerated it
3. all 5 SIM minimum requirements are met http://www.authorize.net/support/SIM_guide.pdf (page 8)
