Got hard rejected... I need help.

Yup… Got hard rejected. Man, it really sucks.
Here’s the project I worked on: https://www.youtube.com/watch?v=BeAzvyMASRo
What’s pissing me of is that I spent a lot of time, making it user-friendly, universalizing the expressions and everything… I understand that the animations may be pretty simple, but I don’t think it deserves a hard rejection… I would appreciate some feedback, guys.

Oh, yes, one more thing. Is it a big deal if I’m selling stuff and I’m 13…?
I use my dad’s PayPal.