Hello Mokonzi,
Thanks for your support. I'll spend my time on fixing that problem asap. Since I'm not a coder so I'm not really sure I can do it

That's why on the Mod Settings, I set this mod to be re-usable so that other coders can develop it if they wish.
About the default category, this won't load probably because you don't have a tab for that category. It means you can only load
a specific tab as default when user hit index.php. If you just enter an ID of a category, then sure that it won't load
So for example, if you have 3 tabs: Tab 1, Tab 2, Tab 3.
Tab1: href="#1|2"
Tab2: href="#3"
Tab3: href="#4"
If Tab 1 is selected for default, then the startLoad() should take Tab 1 URL: startLoad('1|2') and so on for other tabs.