Infinite scroll not working

Hi,

I have Theme options>>General Settings>>Pagination Type set to "Auto infinite scroll".

However, the infinite scroll does not work on my homepage http://sisselcollection.com.

On that page, I have "pagination number" set to 15. I have 27 total posts published.

I have also tried "manual infinite scroll" and that doesn't work either.

Any help is appreciated.

Thanks!!