The title bar of the Avira Web Console contains the link to your Account where you manage your account details.
Click the link.
The Account Details pane opens with the following fields:
Date of creation
Displays the date and the time when you registered the account.
You may enter your first name here.
You may enter your family name here.
Select your preferred language from the dropdown menu.
Select your country of residence from the dropdown menu.
Displays, which kind of account you are using, i.e. whether you have purchased the app or using a free version, etc.
Please click Save Changes to save the account details you have changed.