The titles are very long in Greek. "Verify Email" = "Επαλήθευση Διεύθυνσης Ηλεκτρονικού Ταχυδρομείου"
You can create extra space by editing this code in joomla.css:.component-content form fieldset dt {
clear: left;
float: left;
padding: 3px 0;
width: 12em;
}
Change the width to 30em. This will also change the spacing on your English contact form.