RISE360 embedded button labels not translated

Hi RISE360 experts !

I've translated a french RISE360 elearning module in english using the recommended steps (xliff export/import) and when running (preview) the english module I still have embedded labelled button in french (Start, correct, submit ... are in french).
I'm connected with english language in my articulate profile and turn my internet browser also in english, but no way to succeed having my elearning progress with english buttons/actions.
Nevertheless in edit mode, I can see the button labelled in english ! (see attached file)
If anyone can help me that had experience the same, will be very appreciated :)

Thank you

Patrick