Edit External CSS

You have alot of mixed content warnings, be sure to change your scripts and images to call https.

For example if you can find the reference the following URL in your theme

http://api-idx.diversesolutions.com/Styles/Libraries/juicebox/theme.css

Replace it with:

https://api-idx.diversesolutions.com/Styles/Libraries/juicebox/theme.css

which will work because the provider has a valid SSL certificate.

But I would highly recommend physically searching and replacing your old http URLs and replacing them with https equivalents.

This is a great plugin for doing so if you are not familiar with SQL :

https://en-gb.wordpress.org/plugins/better-search-replace/

but obviously make a backup of your database prior to using it. You may also need to go through your theme CSS, script and enqueue to make sure there is no absolute URL’s.