Quote Originally Posted by lat9 View Post
Increasing that AJAX timeout might help, but without understanding the underlying cause of the duplicates, it's a patch at best. Where did you find that fedexwebservices shipping method?
Hi @lat9, thanks for your reply.

I just increased this time from 5s to 6s and see how it works.

I downloaded the latest FedEx plug-in from numinix. I'm using v1.8.1 now.

https://www.numinix.com/zen-cart-plu...vices-shipping

I checked my server log and my site updated the latest fedex module on May 18, 2022. I installed the latest OPC back on my site on June 2, 2022. Actually the duplicated order issue is started on June 2, 2022. No issues between May 18 and June 2.

I updated my site to 1.57d on April 18, so my paypaldp module got updated at that time.