Problem with “Add to cart” Duplicate Page

Hello Sirs,

I have a problem with my store and would like support from you. Currently I work with external links, that is, from affiliate to my page. So without needing to have the cart options, add to cart and checkout. If you can see, in all products, there is the “add to cart” button, which when you click, it duplicates the same page and returns with the following error: “this product can not be purchased”.

I’d like to know how to proceed in this case. If we can disable the Add to Cart button or create a general redirect for these products. For example, when you click the add to cart button, it redirect directly to the external purchase link, or open the product link, but without the link: add-to-cart = 143 & quantity = 1

Could you help me have a definitive solution to this problem?

Thanks in advance for any possible answers.

The page I need help with: [log in to see the link]