I have read anything I can find about the Addon button not showing issue. I had it showing in the beginning, but then it totally disappeared. I have taken off the "read only" option for the map and everything else is fine. There are no addons from a 3rd party in the folder, it is not in a zip or any other extra maps blocking. I tried to delete the whole interface folder and login to make it auto install again, but still. Nothing..
I also redownloaded the game, with no success. What can I do? I am confused by this.
The Addons button only appears if you have addons installed. If you have deleted the Interface folder you will have no addons installed and therefore the Addons button will not appear.