Hi,

It looks you are using the Contact Form 7 plugin on your website. Probably the issue could be that the date field is not referenced in your email template which is triggered when someone fills the form and hit submit button. You can add or remove fields data inside your email template as per your requirements.

Please read this article which will be helpful in your situation. Probably you have to check Message Body section and verify if date field is referenced or not.

Kind Regards,