I'm sorry if I'm repeating steps you've already taken. I just want to be sure we're on the same page together.
Sims 3 mod packages usually go into this folder: \Documents\Electronic Arts\The Sims 3\Mods\Packages
Did you move the gift pile mod into this folder?
I have noticed that some of the mods I have (Nraas Mods) installed don't show up on the little popup menu at the main menu of the game. But know that they are there because they'll show up when I click on City Hall.
Maybe the mod isn't showing up because of something like that?
If that doesn't help, it may be worth while to contact NonaMena, as she maybe of better help.
https://nonasims.wordpress.com/contact/MrsFlynn