Woocommerce Show Single Variations Plugin – CSS Disabled

I have setup a ton of custom CSS codes, but it seems to be the add to cart buttons have changed to black and black text – so they are unreadable, the buttons are overlapping the pricing and they aren’t aligned in rows – its like a masonry grid of products rather than a standard grid.

I have looked at some plugins and found this one;
https://wordpress.org/plugins/load-more-products-for-woocommerce/

However, I had to add the selectors in to suit the theme – can you tell me what to put as each of these;

Products Container Selector:
Product Item Selector :
Pagination Selector :
Next Page Selector:

It uses X theme as an example with this info:

Products Container Selector: ul.products
Product Item Selector : li.product
Pagination Selector : .x-pagination
Next Page Selector: .x-pagination a.next