Coupon error: 'Error applying discount code [1]'

Hi, Chris!

Yes. There were some updates to the checkout page that you’ll have to incorporate into your older checkout template.

Namely, we upped the timeout from 2000 to 5000. So that might help (this sometimes shows up when the AJAX request times out). There is a filter there now as well to override it.

The other change made is that the AJAX calls are made to admin_url instead of home_url. Sometimes your home_url might be a static page that isn’t loading WP or processing PHP/etc.

Here’s the bit you’ll want to look at:
https://github.com/strangerstudios/paid-memberships-pro/blob/dev/pages/checkout.php#L127

And the same update to some similar code further down the page:
https://github.com/strangerstudios/paid-memberships-pro/blob/dev/pages/checkout.php#L592