It sounds like this issue is directly related to the Polylang plugin.

So in this case, I would like to recommend you to contact Polylang support team so that they can help you with this issue. Here is the link to their support forum:

https://www.ads-software.com/support/plugin/polylang/

Please kindly note that this particular forum is for questions that are directly related to the features and functionality of the free WooCommerce plugin. While we’re experts on our own products, third party plugins are best supported by their own resp. developers (and more importantly, I’d rather not give you any incorrect information).

I hope this helps. ??