If you want to check if your EASYKIT Wifi With Netatmo is already associated with a Legrand account, you must verify it directly on the video internal unit.
Press the configuration joystick on your EASYKIT Wifi With Netatmo: if at the top left of the screen there is the WiFi icon and the name of your home WiFi network means that your EASYKIT Wifi With Netatmo has already been linked to a Legrand account.
If you haven't made the association and you want to have access to the system you must be invited by those who made the association.
See FAQ: "How can I invite someone to manage my installation?