@Anonymous User Have you tried to add more than one device? As you can only add one a month.
I am not staff, I am a customer that likes to help, so please click the Thank You/Thumbs Up button if I helped you out and maybe even accept it as a solution? 🙂
I know this is a week old but iof you contact the live chat they can help you i have had to do it on serveral occasions to reset limit should only take 5 or so minutes