Who sees what
You see of others what you show yourself.
Every optional field has its own visibility: everyone, matches only, hidden, or not set. You can change it at any time.
People who filter suggestions by gender see you only while your gender is shown to everyone.
Contacts (email, phone), exact address and documents are shown to nobody and cannot be published.
Preview: how others see you
Your profile
PhotoInterestsProfessionGender
They can also see: Photo, Interests, Profession, Gender.
Not shown: Place of work, Certificates, Citizenship, Relationship status, Test result.
This is how your card looks to someone you have not matched with yet.
A field you have not filled in stays empty for everyone, whatever it is set to.