The product_info.php is in fact a big so, while editing this file to insert the 2gether code, you must pay attention to put the 2gether code after the that already exist on product_info.

If you fail to do that, your customers will not be able to add just one of the products to the cart and all buttons on product_info.php will add both products to the cart.

solution:

look for at the very end of product_info.php and remove it.

add just after :





that will make sure that the normal add to cart form is closed before the 2gether form is opened.

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