We have both retail and custom products in our Woocommerce store. However, we will need to disable Ajax add to cart only for Custom products while keeping the ajax add to cart for all the other products that are not tagged "custom".
Here is an example of a custom product:
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If you try to do a test purchase here, you'll see that it doesn't submit the fields to cart because it's AJAX and the form doesn't support it. I just need someone who can make it work today.