Enter your password to log into your library and click on the button “My account” to get to the account settings.
Just a hint: In case you open the library with a smartphone or tablet, the icon can as well be a small gear.
You will find the area “my birthday” in your account settings, which you can click on. Now enter your birthday and just leave afterwards- it will save automatically.
Important: Please enter your birthday as DD.MM.YYYY.