Please add this to the Custom JS area in Vamtam Theme Options / General:
jQuery(function($) {
var check = function() {
if( $('.twitter-timeline-rendered').length && $('.twitter-timeline-rendered').height() ) {
$('#footer-sidebars .row').each(function() {
$(this).find('aside').matchHeight();
});
} else {
setTimeout(check, 150);
}
}
check();
});