CustomPress post-type page translation

Hi!

I used CustomPress to create a vendor category. I need help creating or setting up the translation template for my french versions. Currently all 'Vendor' category items get displayed using content-single-vendor.php from inside folder 'template-parts' from my theme. I am confused for some reason as to how to proceed to make the french pages use a different template page?

*site is cumberlandfarmersmarket.ca (developped while it was still cumberlandmarket.ca)