Polylang changes Woocommerce default language

I have a wordpress website with polylang, and content in two languages.
I don’t have polylang for woocommerce, so my shop pages are in one language.

I would like my shop pages to be in french, but they aren’t. I set french as default language both in polylang and in general settings. But I did this after installing Woocommerce. And my shop pages are still not in french.

When I desactivate polylang, my shop pages are in french. But every time I activate it again, my shop page turn in the other language (that is not very well translated).

How can I set french as default language for my Woocommerce pages ?

Thanks a lot.