I see you’ve got a minification plugin enabled, so you need to regenerate the minified file for the plugin to work, alternatively disable the minification plugin and things should work more reliably ??
The plugin you are using for this is wpfc-minified
(this is not the plugin causing issues with your site, but it does prevent the jQuery Migrate script from working as intended right now).
Once you’ve disabled that, we’d be happy to assist your further in a support topic, but for now I’m afraid we shouldn’t continue this discussion here, as this is a review and it might become confusing to those looking for a similar issue who may not find it since it’s in the wrong place ??