Magento plugin AppJetty is the official Australia Post technology partner. This Magento Australia Post Shipping Extension is for the standard service. Powered by Biztech Plugin https://www.appjetty.com/magento-australia-post-shipping.htm User guide https://marketplace.magento.com/media/catalog/product/biztech-Biztech_Auspost-1-2-4-ce/user_guides.pdf
Below steps worked for me Clear Browser Cache Disable Merge CSS files in Magento In Magento backend go to Configuration > Developer > CSS Settings > Merge CSS files > No Flush Magento cache Clear CDN cache In CPanel locate and flush Super Cacher
Go to CMS > Pages > Home Page Open the Design tab, in the Layout Update XML field you can see the home page blocks code.
The “upload” button in Magento uses “Flash”. If your computer disabled “Flash”, then it won’t be visible to you. Please Go here https://helpx.adobe.com/flash-player.html and click the “check now” button to check your flash installation and see the instructions on how to fix the issue. And follow the steps.