Works for about 10 Minutes then freezes

i have a 2012 macbook pro 2.9 GHz Intel core i7 8gb 1600 MHz DDR3
And this app only works for about 10 minutes and a couple downloads then ends up
not loading after i try to change categories. This shouldn’t be happening please update. Thanks, BTW Nice photo choices.

Colossus36 about Wallpapers HD