Problem: when active desktop theme is Expound, then the menu button in mobile theme Mobile is inactive. When active dektop theme is Omega, then the menu button in mobile works. See at http://new.cleanlanguage.fr
Wordpress 4.6
Any Mobile Theme Switcher 2.0
Expound 2.0.1 (theme by K. Kovshenin)
Omega 1.3.0 (theme by ThemeHall)
Mobile 0.5.1 (child theme of Omega)