i have space in the right in mobile version in a free kit called SMB

Hello all, i got a small problem in mobile which is a space of 30px proximality, i checked all what i know but i couldn’t figure it out, especially when i checked this space in inspect element it doesn’t appear there it just exist but in the html code i can’t find it, by the way this is not the first time i face this with free template of envato, i searched in google they said the body doesn’t contain the overflow hidden property but in inspect element i found it (overflow-x: hidden).
Name of the Kit is SMB exactly Home-Ageny.
If any one know what can cose this problem i will be grateful.