Sorry for overloading you with jargon. I assumed you where the Administrator, as this needs more than just a Moodle user to sort the menu out. It's one of those things where you will need access directly to the server where the files are stored.
The aardvark_menu.php is stored in the aardvark_pro folder on your server within the main Moodle directory. Only your Webmaster/Administrator will be able to get you a copy of this file so you can amend it, or someone else can amend it, before giving it back to the webmaster/administator to be uploaded to the server so that it can overwrite the existing menu. This might sound complicated but it isn't.
The path to the menu file in the Moodle Wood is as follows...
Give this to your Admin and I am sure they will fix it for you.
Hope this is not too befuddling...?