Wrong language in checkout

Hello,
First, thank you very much for your plugin. Amazing work!
But I have problem with checkout page in my WooCommerce Shop.
Table with product and terms agree is in wrong language.

I have site in two language – polish and dutch.
Wordpress in polish. WooCommerce in polish.
Every plugin is up to date.

When in my site I change language to dutch:
https://i.imgur.com/XMFKAGp.png
When you load a table can be seen for a moment in the appropriate language:
https://i.imgur.com/GnFWNqY.png

Now it is the other way around – when I change to polish – I have dutch product table.

Also this problem is in Cart Widget:
https://i.imgur.com/oOYWHKD.png
Language site: polish
Language in widget: dutch

https://www.ads-software.com/plugins/im8-qtranslate-woocommerce/