@Chopps It sounds like you have reached the device limit (currently a 4 max lifetime limit). It is weird you didn’t receive the device limit reached message. Try clearing history/cache, exiting Brave, and reopening. Is a new message displayed?
If you do have the device limit reached message, use the link below to unlink one device. The other links are to screenshots of the form and where to get the information requested.
How to Submit a Wallet Unlinking Request
How to Remove Verified Devices
Rewards Internals Screenshot (enlarged)
Form Screenshot (enlarged)
Brave is removing linking limits. Anticipated release date is sometime in April or May. A release date has not been confirmed. You can use the link below to track the Brave GitHub project and check the status.