I am already an administrator, know how to enable HTML Macro. The thing is I can't find HTML Macro in Manage Add-On. I did exactly as what was on the website. Changed the dropdown to systems, search for HTML Macro. There's no HTML Macro.
Another thing is when I want to install add-on from market place. I couldn't find the item from market place. And when I want to upload the add-on from my side. First I could not upload from my computer, and I tried to upload using a saved link online, I couldn't neither. The error message was like: "can't upload add-on xxx at this Confluence On-demand instance"
Can someone solve this?