Switch menu problem

Hi,

I have some trouble when I try to add menu switcher:

here is my setting: https://screencast.com/t/gSSXVBho3fG

and the problem, menu is duplicated: https://screencast.com/t/tzk6hlWD

If I delete menu switcher all is correct: https://screencast.com/t/47OoODCKn1YX

I use last version of plugin and last WP version, default language is french, theme used is AVADA, last version too

Thansk for help