Simple Edit on woocommerce ? Product images display

Hi

I am very new to wordpress & have basically took over from a colleague who managed the websites.
On a few of the pages i have items listed via categories.
I know this sounds simple but the items are aligned on the left in 2 columns, how can I make them centred in 4 columns?
Ive had a look at all the files in woo commerce folder to find anything in relation.
As well as theme options and the pages ( which do not show on there) The only area the categories show up are under ‘products’ and then ‘categories’

The page is :
https://kpods.co.uk/product-category/coffee/

thanks for the help
Paul