It appears as though you have inserted your custom menu into both the “Header Menu” and the “Secondary Menu”. Go back to your admin panel -> appearance -> menus, and in the top left of the screen make sure your custom menu is only set to “Header Menu”.
This free Support Forum relies on contributions from our support staffs and fellow Graphene themes users. While we endeavour to provide adequate and timely support, due to its voluntary nature responses are not guaranteed and may be delayed.
If you require urgent assistance, you may like to consider our Priority Support option.