We have a Magento site running version 18.104.22.168. On February 27, we started receiving failed payment emails. Today I replicated the issue. In the last step after entering my credit card information, I received this error:
"Gateway request error. Unable to read response, or response is empty."
18 freelancers are bidding on average $150 for this job
I can make it work, we need to get back to the api sandbox mode and then debug it. We need to make a copy of the site for development so the original site don't go offline.