Hi Glynis,
Per you original forum post: Google has changed their test system from using the sandbox to a new method. If you currently have a Google Checkout Sandbox setup, you can still process test transactions but new accounts cannot.
This Google Checkout change is on our dev list to be resolved in a future version of the Cart however due to our programming queue currently being full with paid customer projects work has not been started yet so I can’t give you a completion date. If you would like to have this item prioritized into programming right away please submit a quote request at the following link. It is not required that you sponsor this change, just if you would immediate attention to the issue you reported:
https://www.smith-consulting.com/serv...
Please let me know if I can help with anything else..
Thanks,