It seems that it is the Themify builder plugin that is affecting the navigation bar fro appearing on the mobile view. I guess I will have to deactivate the plugin whenever I want my site to go live?
I would suggest trying a different page builder plugin.
There are lots other reputable options out there with more active installs/users and better review/support!
I would like to stick to my builder because all my content are built with it. The problem is not with the website seen on the desktop but on the mobile phone. How am I to paste a link?