Im hoping someone could give me some advice, i have google checkout installed in my zencart, ive input all the details and gone through the read me file in the setup files and everything seems to be fine BUT...
When a user adds something to cart, selects shipping, selects googlecheckout as payment module and then finish and confirms the order, nothing happens, the order is not process and it returns the the shopping cart with the item in it, so the user could go round in a massive circle and not get anywhere!!!
Please could someone help me with what going wrong? im hoping someone else has had the same issue and could tell me how to solve it.