problem side menu responsive in demo template photograpy

Good Morning.
I’m using the templates photography and I have a visualization problem in the side menu …
in the computer it looks perfect, but in the mobile the menu disappears, but the color strip of the menu, no.
and the funny thing is that it does not happen in all the pages, which by default use the slider revolution, they go well, the rest do not.
How can I solve it?
I have changed all the options, but it does not do anything.
I hope you can help me.
attached photos