The device status shown in the Norton account portal is not always authoritative. The local Norton client status is the more important indicator. If the product itself reports protected and the subscription is active, this may be a synchronization or registration issue between the device and Norton account backend.
You might try signing out of the Norton account within the product, rebooting, then signing back in. Also check the account portal for duplicate or stale device entries and remove any no longer in use. In addition, confirm that Remote Management is enabled in the Norton settings, since disabling it can prevent the device from properly reporting status to the Norton account portal.
If the issue persists despite the local client reporting protected, contacting Norton Support may be the best next step so they can review the device registration on the backend.