I have a question for you.It's more of a question for Fanpop, still I was wondering how can I finally get my 1D - This Is Us special cap?

How come I'm the only Directioner without this 1D special cap? I know for a fact that Fanpop still gives away that very same cap, even now, in 2018, but what exactly should I do to get this cap? I mean, what's the catch? Any advice on how to get it? Or should I refrase the question: How did YOU get your 1D special cap in the first place? Thank you in advance for your answers.