To change any of the following account settings:
sign in to your MyKNX account and go to your Profile page via 'Account > Profile'.
Click the 'Settings' link to open the security settings page of your account.
You will be redirected to https://id.knx.org, where you'll be asked to sign in again using your current credentials.
Once logged in, you'll be redirected to the 'Manage Account' page, where you can perform the actions mentioned above: