Show grid on mobile

Hi,
first of all thank you for your great plugin.

I use it on the desktop version of tmy website a responsive but I noticed on wptouch mobile version that grid is not shown and all images are aligned at the center one on another:
http://www.robertorizzo.com/idee-regalo/ritratti-di-animali-su-commissione/

Anyone can help me to solve this problem?

Thanks a lot in advance,

Bob

https://ww.wp.xz.cn/plugins/responsive-gallery-grid/