I have the website with "YITH WooCommerce Dynamic Pricing and Discounts Premium" plugin that have conflict with the "Fixed quantity price" plugin that is used to make the product a Unit or a Pair.
When it comes to a product with a choice of pair or unit It does not make the discount visible either on the product page or in the cart. Also, when I add the pair, it does not discount. The price is not displayed well and the discount is not displayed well in the cart.
Please look https://100ycientas.es/producto/aro-dinosaurio-oro/
When you click "PAR" (Pair) or "UNIDAD" (Unit) the discount price is not changing and stays the same.
It is can be bacause of not compatibility with "YITH WooCommerce Dynamic Pricing and Discounts Premium" or bug with "Fixed quantity price"?