I have been using promo codes for 2 years with no issues but suddenly one of the codes is not working at all (we use promo codes on the majority of our registrations). I have verified the code is setup properly, assigned to the event in question, and the dates are good on it (just like all my promo codes). I also verified that all of the plugins are up to date on our site. I am trying to register an Iowa team (http://targetingexcellence.org/events/2017-ia/) for the 1:30 time slot (ticket). The promo code I want to use is “2017phibroteam”. I get this error message when I click submit promotion code on the registration payment page: An error has occurred:
The selected method of payment could not be determined.
Please ensure that you have selected one before proceeding.
If you continue to experience difficulties, then refresh your browser and try again, or contact rvirden@targetingexcellence.org for assistance.
I checked your site and the promo codes not working is more of a symptom of a site-wide problem where some of Event Espresso’s scripts are not loading in the correct order. Are there any activated plugins on your site that try to cache, combine, rename, and/or change the order of the JavaScript files that normally load from the head of the webpage to the footer of the webpage?
I took a closer look at your site and I see that it has the NextGEN gallery plugin. Can you try adding the following to your wp-config.php file?
define('NGG_DISABLE_RESOURCE_MANAGER', TRUE);
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