Hello,
1. I’ve checked your page content and see that you already have a custom class for needed row http://prntscr.com/i0ma6d in this case you may add this code in style.css file of child theme or in custom css for page:
@media only screen and (max-width: 480px) {
.no_padding {margin-bottom: 0 !important;}
}
Please try to do it. Of course, you may change the custom class name in page editor and in code.
2. Please provide FTP access in Private Content.
Thanks in advance.
Regards