We are upgrading our client's cart to be responsive, so functionality has not changed - but there are significant changes to CSS (and some to HTML). Using the new cart, we are getting
Your script timed out while we were trying to post transaction results to it.
on every single attempt. We revert to the old cart, it goes away. There is no change to the environment, just the webcart files themselves.
We've gone through all the steps in https://support.authorize.net/s/article/Why-Are-My-SIM-Relay-Response-Transactions-Timing-out-After-....
The thing is - it's taking less than one second before it says it times out. The payment is being successfully added to the order. We see all of our APIs that are used to display the relay URL being called, as if it's trying to load the page. They are all completing in well under 1 second. Yet, within that same second we get the Auth.Net page saying there was an error.
Is it possible there's some limit on CSS on the relay URL? We had (non-Auth.Net) problems when adding dynamic minification - some browswers if they didn't start getting a response back in 1/4 second decided they weren't ever going to get a response back, and timed out that quickly. Is there something similar going on here?
Thank you!
