Dear Artem,

this is what Vitalii Kiiko author of the Uni CPO advised:

“I see the JS error on the product page: “Uncaught TypeError: e.productFormEl.parsley(…).validate is not a function”. Quite possible that the theme uses its own version of ParsleyJS script. Or maybe it dequeues this script from the plugin and adds it later or smth like this.”

Is it possible that you both Authors, can combine these two wonderful tools (Woodmart & Uni CPO) working together?