woo commerce shop images not aligned properly

Hi, On my website https://www.scrapbookingdelights.com.au the shop product images are out of alignment on the ipad, they do not always show 2 or 3 in a row, some images are up some are down, some are ok, how can i get them to line up in either 2 or 3 in a row and always be left to right?

here is a snap of what i mean:

https://www.scrapbookingdelights.com.au/website-problems

thank you your help is appreciated

https://www.ads-software.com/plugins/woocommerce/