MailChimp plugin + PopUp Pro sending validation problem

Hi there!

Congrats for your unique approch and your amazing plugins!

I'm using MailChimp Integration plugin and I'm loading a subscription form with PopUp Pro plugin. It seems that there is no validation before sending to Mailchimp... even if there is no email entered and even if First Name and Last Name are empty and set as required.

Thanks in advance!

JP