That sounds like the remote is trying to link to your Roku, but the Roku isn't responding to it. Try unplugging the power to the Roku for a few seconds then plugging it back in to make it reponsive to the pairing request.
Roku Streaming Stick +, 3810X, Ser YH0059427035, wifi - Samsung UN55ES6100
Roku Streaming Stick, 3600X, Ser 5S56D8240827, wifi - JVC EM37T
Please send me a PM with your Roku account email address, and include the serial number on the Roku device along with a summary of the issue you are experiencing. I'll be able to assist you further from there.