Inappropriate automatic category adding in posts

Hi,

Polylang adds a kind of category to my posts, see an example

The problem is – this category doesn’t exist in my categories list. Plus, this “FRANCAIS” category points out to the home page. Which is inappropriate.
How could I remove this automatic adding, saving my native theme’s categories list under the post’s title?

FYI : I’m working on localhost for the moment, having all last versions (WP, polylang, theme, etc.), my website is in French (by default), my theme is Enfold

https://ww.wp.xz.cn/plugins/polylang/