Hello,
Add the next code in Custom CSS area:
@media only screen and (max-width: 768px) {
.footer .vc_column_container {
float: left;
}
.footer .wpb_raw_code:before,
.footer .wpb_raw_code:after {
content: '';
display: table;
clear: both;
}
}
Clear cache of browser on mobile and check then.
Regards