Thanks for your patience. I did take a look at the site, and the first thing I noticed, is that you do not actually seem to have a navbar in your navigation symbol, thus no hamburger menu either.
The hamburger menu only works with the navbar widget. Currently the navigation is using rows and columns dropdown widgets only (that I could see)
By default, the dropdown that opens, overlays the content below it. This causes the open menu text to be displayed above the other dropdown menu texts.
I would recommend on mobile portrait, to put each dropdown on it's own line by setting the Dropdown to display block, and then give each dropdown list a class.
Set the dropdown list class to relative
What you would end up with, is something like this (quick example, I did not change any other styles to make it pretty with ease transitions or anything...)
Setting the dropdown list to position relative, will cause the menu to open, and push the other content which follows it, down, instead of overlaying the content.
This is one approach if you are going to use dropdown widgets in mobile views, stacked on top of each other like that, or grouped together closely.
I hope this helps, cheers dave