You can easily modify the data you provided when registering with POK. Just log in to your account and click on the image with your name initials at the top right of any page, then select "Profile". Here you will find the section "User details", where you will be able to modify your profile. If you registered by using your Aunica credentials and wish to change the fields "Name", "Last name" and "Email address", you can do so through online services.