Value in date fiels in member form

I entered a non-mandatory field called “Scadenza Contratto” in the profile form ( Field in Profile Form. If a user does not fill it out, it does not appear in his profile, but if I insert the “Scadenza Contratto” field under the tagline in the member form, it appears even if the user has not entered any value: Member List.

Show these values: Date of birth: “View the updated date for the same day – Example 08/04/2019”. If I look at the list of members tomorrow, the date in “Scadenza Contratto” will be 09/04/2019.

I hope I was more precise, I’m sorry for my English.