The "Personal Details" tab contains the information contained in the library: contact email and the expiration date of your user status.

Here you can change to your preferred language, and external and authorised users can also change their access password.
If you are a member of the university community, your contact details come from the Virtual Secretariat. If you want to change your contact telephone number or email address, you must do so there: Virtual Secretariat > My Account > Profile.