Quote Originally Posted by split63 View Post
According to Stripe:

To automatically expire unused Checkout Sessions, you can set the expires_at parameter when creating a Checkout Session. This parameter determines the expiration time of the session and can be set to any time between 30 minutes and 24 hours after the session is created. Once a Checkout Session reaches its expiration time without completion, it becomes inaccessible

The default expiration time for Stripe Checkout Sessions is 24 hours

Perhaps the easy fix is to set this parameter to just less than whatever the session time out is for Zen?
I don't see where it is ever set in the stripe code
Zen Cart's session timeout is 1440 seconds by default. This is 24 minutes.
Stripe's timeout is between 30 minutes and 24 hours, so the same issue will occur during these 6 minutes.
For this reason, the tpl_checkout_comfirm########.php script is set up to redirect to the time_out page as soon as the Zen Cart session timeout occurs.
If you want to set it on the Stripe side, you can insert "expires_at:" and the timeout time line 37 of checkout.js. (I haven't check this though)

$timeoutURL is Zen cart session time