My WordPress themes is not a mobile friendly compatible

Hi Everyone , I need help

I purchase a themeforest-4091658-kallyas-responsive-multipurpose-wordpress-theme.
Then after developing it, I have noticed it in viewing via mobile it doesn’t support.
Please help me to have an Idea on how I am going to trouble my site
This is the link of my website: https://www.cctvphilippines.com
I hope developers will support me

Thanks

Gibson Torreon