Hi Darren,
Did you recently switched your site to SSL because I could see some resources not being loaded because they are still reffering to the http link of your site. If so, kindly try to make sure you have updated all the links to https.
You can do this by using the Better Seach and Replace plugin the searching for:
http://yourdomain.com.au then replace it with https://yourdomain.com.au and
http:\/\/yourdomain.com.au then replace it with https:\/\/yourdomain.com.au
Please make sure to backup your database before making any changes and to replace yourdomain to the domain of your site when you do the search and replace.
Hope this helps.