PenciDesign replied
Hi,
Seem you didn't check documentation for this theme before you import a demo - let's check it here
If your site has old data, you should do only WAY 2 - not do WAY 1.
Anyway, you can fixed the issues now by go to Appearance > Menus > create/select a menu for your main navigation > scroll down and check to "Primary Menu" at the bottom.
Best Regards,
PenciDesign