The Apple Support Communities are an international user to user technical support forum. As a man from Mexico, Spanish is my native tongue. I do not speak English very well, however, I do write in English with the aid of the Mac OS X spelling and grammar checks. I also live in a culture perhaps very very different from your own. When offering advice in the ASC, my comments are not meant to be anything more than helpful and certainly not to be taken as insults.
The iLife apps on a new Mac must be accepted into the user's Mac App Store (MAS) Apple ID. Open the MAS, sign into your account, go to the Purchases pane where you should find the htree preinstalled iLife apps with Accept buttons. Once you have accepted them into your account you should be able to update them until the next major paid upgrade.