In order to add a device to your account, you must install and login to APRROW in this device. In other words, you must be using APRROW in this device in order to add it. This is because APRROW needs to collect the device type, model and ID in order to ensure we keep your account secure.
When you login for the first time in a device, APRROW will detect that you don't have this device in your account and it will automatically be added.
If you prefer not to have a device in your account, you can remove the device by selecting STAX on the main menu and then clicking on the Device Icon. Select the device you wish to remove and click on the Delete icon.