Polylang Print page are in wrong language code :o

Hello,

We are struggling with translation & wp recipe maker. We are trying to translate our print template. We followed same logic for print translation into “String translation” from Polylang :

https://help.bootstrapped.ventures/article/132-how-to-use-this-for-a-multilingual-blog

On our case, french-canadian is our default language, english is the second language.
When we are opening english print recipe, the language code (into code source) is : lang=”fr-CA” so the french print template is loaded 😮

any idea ?