Hello Alain,
I just check in Adventurous 0.3 Menus Locations and it is showing two locations at “Appearance => Menus => Manage Locations”
1. Header Right Menu
— This will show your custom menu in header right section
2. Header Secondary Menu
— This will show your custom menu above your slider.
Further, if you don’t want Header Right section then you can disable it from “Appearance => Theme Options => Header Options” and check in “Disable Header Right Section”.
It’s really strange why you are not seeing header right section. For this I need to check in your server. So, I will send you personal email.
Regards,
Sakin