Primary Menu Not Accesible on Mobile

On Catch Flames Pro my Primary Menu is not accessible on mobile (iPhone 5s) or when when resized small on a desktop monitor. I expect to see the square box with three lines to access the Primary menu like the Catch Flames Pro live preview, but it isn't there. My site is tidewatercanal.com I tried disabling all plugins but it didn't help. I'm using a child theme for some minor theme tweaks. Any suggestions? Thanks!