Hello,
I didn't tell you to change menu type. Actually, only Drop Down menu has responsive mode. I was recommended to you to have only one Drop Down menu for all languages. Currently, you have 3 Drop Down menus (mainmenu, mainmenude, topmenude) and it makes conflicts.
You can assign specific menu items from this single menu to work only on certain languages. So, you don't need to have more than on Drop Down menu on page.
Regads,
Milos