Thank you for supporting this! I finally have it working properly again after giving it up as abandoned some time ago. I really appreciate you taking this on.

I have a "best practices" question that I can't find an answer to elsewhere.

I am using GC version 1.5 and Zencart version 1.3.9h.

I currently have API Version 2.2 selected and things work fine. The options range through 2.5 and I am wondering if I should select a higher option. What is recommended?