PenciDesign replied
Hi,
You have a plugin caused this issue.
Please try deactivate all plugins ( except plugins come from the theme ) and check it again.
After it work, let's enable each plugin to check what's plugin caused this issue.
Also, I see your menu items is overlay - you should go to Appearance > Menus > create a new menu for your site > scroll down and check to "Primary Menu" at the bottom.
Best Regards,
PenciDesign