Hi Martin,
This issue is coming from our side and we will fix it in the next release. In the meantime I have applied the CSS in your template custom.css as below:-
.com_easysocial #es .echo-slider {
min-height: 850px;
height: auto;
}
@media (max-width: 767px) {
.com_easysocial #es .echo-slider {
padding-top: 100px;
padding-bottom: 100px;
}
}
It should be displaying correctly now. Please have a look, thanks.