Hi @shogen
it’s a plugin duplication problem, they can’t resolve it, and they want to be paid to put a 301 in other links/slug. (its not normal)
example https://arteologic.com/writewhateveryouwant/figura-green-kerkus/ show the same product.
The problem is when Google starts to crawl the duplicated pages and put it in “duplicated with canonical url” in Google Search Consolle. More products, more duplication, more wasted google crawling budget.
Try to use “Use woocommerce default permalink”
Category slug is ok.