IMHO, the french translation of "Aperçu activé" is not a good translation of "Preview on".
It should be better to write "Préversion activée".
The meaning of "Aperçu" in french is to "See only a part or a sample of something".
Salut @thierry DEMAN-BARCELÒ
Thanks for entering the competition and for the suggestion. Our French moderator will take a look at it and we will get back to you.