Hey
@Jason76 , are these images being loaded from forum posts? If so you have to enable image proxy.
On forums, when users use the image bb code, the image may not be coming from a https connection. The image proxy will then basically make it so the image is coming from your site via your https url. Something like this:
https://funbizforum.com/proxy.php?image=
Go to your ACP and go to Message Options in the options section:
https://funbizforum.com/admin.php?options/list/messageOptions
Scroll down until you see "Image and Link Proxy" check the image proxy check box, and set a secret key (can be anything)
Also on top of this, it looks like your background image is using http:// instead of https:// so that will be the cause of your homepage for not being secured properly:
http://dohtheme.com/demo/xenforo/styles/pad/xenforo/img/bodywallpaper.jpeg
it's in your extra.less file. Search for this ".bodyBackground_overlay__bottom::before"
Then just change the http:// to https://