Unplug the power cord from the Roku for a bit, then plug back in after stops bouncing press and hold the pairing button for 5 seconds even if already blinking, then release just let them communicate with each other. A Roku is in sniffer mode looking for wifi signal after a power interruption.
Edmund Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution." If you appreciate my answer, maybe give me a Kudo.