I think (with my poor FR)- that should be OK - if not, check & correct
COM_SPPAGEBUILDER_GLOBAL_USE_WIDTH="Largeur de l'addon personnalisée"
COM_SPPAGEBUILDER_GLOBAL_HIDDEN_XXL="Masquer sur ordinateur"
COM_SPPAGEBUILDER_GLOBAL_HIDDEN_XL="Masquer sur ordinateur portable"
COM_SPPAGEBUILDER_GLOBAL_HIDDEN_LG="Masquer sur tablette paysage"
COM_SPPAGEBUILDER_GLOBAL_HIDDEN_MD="Masquer sur tablette portrait"
COM_SPPAGEBUILDER_GLOBAL_HIDDEN_XS="Masquer sur téléphone portable paysage"
COM_SPPAGEBUILDER_GLOBAL_HIDDEN_SM="Masquer sur téléphone portable portrait"
XXL - Desktop, XL - Laptop in EN version.
FR_lang_SPPB_41x_unzip.zip
not for install, but FTP upload only (!)