I bought a Roku voice remote pro from Amazon in July 2021. A month ago it stopped working. I charged it to 100% but now works ONLY when it's connected via the cable to usb port or the charging cord to an electrical outlet. When connected, the pairing light comes on. But when not connected, the pairing light will not come on. I've disconnected the Roku unit from the power cord, waited a minute & reconnected & retried remote pairing...no luck.