Hello @tristup,
It seems that there is an issue of the mixed content issue and there is some JS console error, it might be the issue of plugin conflict issue. It seems that the URLs are not fully replaced while moving the site from staging to production and that causes the Mixed Content issue [ HTTP and HTTPS ] blocking to load of the files.
I would suggest you replace the URL properly and check this again, there are many URL replacement Plugins available in WordPress that 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/
I would suggest you troubleshoot a few of the common issues before we investigate your settings.
If none of those work, It would be best if you could
copy 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
- FTP Details
You can find the Secure Note button at the bottom of your posts
Thanks