I purchased for 3 devive , i use it in two devices also the my devices tab shows 2 devices one is my macbook and other is my mobile , licence tab shows you use 3 devices

i purchased for 3 devive , i use it in two devices also the my devices tab shows 2 devices one is my macbook and other is my mobile , licence tab shows you use 3 devices and i am not able to use it on my third device

My Subscriptions page
https://my.norton.com/extspa/account/subscriptions

What does My Subscriptions page → Annual Subscription: #? of 3 License(s) used

What does My Subscriptions page → Manage Licenses report #?