Oh I see. Our plugin hasn’t been translated to French, but you can use this tool: https://poedit.net/download to create a French translation. Our plugin contains a .pot file which you can translate with Poedit. Feel free to translate the ‘Free products’ text amd any other texts you would like to see translated and I’ll include it in the next release.
If you wish you can also do it from your wp-admin if you download the ‘Loco translate‘-plugin. That way the translations will work immediately on your site and you don’t need Poedit. If you download the PO file after translating and send it to us, we can include it in the next release.