Gtranslate on Menu | WordPress.org

Hello I have a problem with my site https://nagoyamotor.com/ plugin Gtranslate only show 15 flags, and when I scroll down Plugin gone because I set for main menu.

But I found other website they are using Gtranslate as a dropdown menu, Please can you tell me for using Gtranslate like this site https https://indomotobike.com

Thank you.

The page I need help with: [log in to see the link]