Product category – items per line

I am trying to adjust the number of products displayed per row on my site. It was working fine until I installed the genesis connect plugin. Installing that solved one issue I had, but created this one.

I’ve tried editing the functions php file using the following with no success:

// Change number or products per row to 3
add_filter('loop_shop_columns', 'loop_columns');
if (!function_exists('loop_columns')) {
	function loop_columns() {
		return 3; // 3 products per row
	}
}

I’ve also tried the WooCommerce Product Archive Customiser plugin which will let me change the number to two, or one (increasing the image size to compensate) but I can’t get it to show more than two per row.

Example of product category page: https://www.thelifecreativeblog.com/product-category/decor/