Ring Chime - Device Setup Attempt Blocked

Hi! I have a few ring devices - two cameras in the garden, a ring doorbell and two chimes - a few months ago one of the chimes stopped working, I'm now trying to set it up again but it keeps giving me a message - Device Setup Attempt Blocked - I'm being advised this needs to change ownership - I can't see it anywhere in my devices to remove it so I can reset it and add it again - it basically won't let me readd it to the original account it was setup on Can anyone advise mwe what I should do please? thanks Duffs