naomiblindeman on "[Plugin: Contact Form 7] Datepicker stopped working in Firefox Mozilla 20.0"

Unfortunately when I type in a date in the date field in Firefox, the form won't validate. Keep getting "date format seems invalid" even though I am using the right format. Any idea why that could be? It does validate in Chrome where I use the datepicker.
It is a live site so unfortunately I can't keep it up for you to try out. I will replace it with a text field for now.