Hi

I have recently started using the latest Zen cart version 1.3.7 and I’m trying to set up the inbuilt Paypal express modal, I have followed the information provided by you guys in Zencart’s help forum and activated the API access in my Paypal Premier account then copied my information and installed it into the option boxes within Zen carts admin area.
I have also emailed my server host and asked him to install cURL into his server obtained his IP address tried cURL Proxy Status on/off with and without the port forwarding but still I am having trouble getting the Paypal express to work.

If I run a test sale on my site it redirects me to “https://www.paypal.com/cgi-bin/websc...ction=continue” But with an error: “This transaction is invalid. Please return to the recipient's website to complete your transaction using their regular checkout flow”

I am wondering if anyone might have any information that could help me find out where the problem is.

Thanks