Menu bar has disappeared

So, I have been designing my site. I made some redesigns. The only thing that has changed in the menu bar is some text for one of the tabs. However, when I publish my site, the nav bar disappears on the mobile view. Any suggestions on how to fix?

Preview link:

Published site:

You can see in the preview mode, it looks like it should appear, but when it gets published, it completely disappears although the space is there for the menu.

Your content is too wide. Your menu button is still there, just scroll to the right and you will see it there.