Menu not appearing on mobile phone

The website is at coastalvisionblog.ipower.com/nerdt The menu is not showing on mobile devices. I deactivated all plugins and the menu did not appear. The only plugin I have running now is MetaSlider but when I deactivated, the menu did not appear. Other than this one plugin, I don't have any other fancy customizations. Please help! The site is being shared at meeting tomorrow night. Thanks!