Hello @Marco,
Thanks for writing to us.
I checked your site it seems that there is an issue of mixed content that might be blocking to load of the required JS file. I would suggest you replace the URL properly and check this again, there are many URL replacement Plugins available in WordPress which help you to replace the URL.
This article will be helpful in this:https://www.wpbeginner.com/plugins/how-to-update-urls-when-moving-your-wordpress-site/
Also, remember that the exact URL should be mentioned in Setting > General, WordPress Address and Site URL, including the protocol i.e HTTP/HTTPS.
I also noticed that you are using multiple plugins for the cache and JS/CSS minification. You are using the “Autoptimize” and “WP Fastest Cache” plugins. I would suggest you troubleshoot with a few of the common issues before we investigate your settings.
- Testing for Plugin Conflict
- CSS/JS Customization
- Version Compatibility
- Disabling Cache
- Child Theme
If none of those work, It would be best if you could copying your live website to your staging area. and send your details in a secure note so that we can investigate your setting without breaking your live site. Please provide the following details
- WordPress Login URL
- Admin level username and password
You can find the Secure Note button at the bottom of your posts
Thanks