Hello Doug! The Remo plug should connect using Thread if it is the Thread enabled version and your Apple TV 4K (2nd generation). Please try a tipp from Apple: Thread accessories might not use Thread following initial setup and instead use Bluetooth LE.
Workaround: Move the accessory near the home hub, then toggle the accessory state several times. Just pull out the plug for one minute then plug it in again. Best regards, Volker
Apr 11, 2022