how do i get more than 3 free plat?

I did the free platinum thing but can I only download 3 games to get free platinum?

Like when I click free plat it only gave me 3 games with free plat is that all I can get? If not please tell me how to get a few more I want the next campaign. Thanks.

It could be that's all that's available. It could also be you already have some of the items/games installed. Try deleting some installed stuff, preferably ones you're not using, and see if more show up.