I've installed the Loco translation plugin to perform translation for the theme, I have now both fr_FR.po and fr_FR.mo created and in the right location I suppose : themes/bootstrap-ultimate/lang/fr_FR.mo
I also added them in my child theme in case of...
But the theme seems to remain in english, so I guess I'm missing something, though I followed the instruction in the README file.
I still read "Posts Categorized:" for example.
Thx to help me :)