Can't get Ruuvitag plugin to work in Signal K

[traveler]

I've had good luck getting Signal K plugins to work, but I'm stuck with the signalk-ruuvitag-plugin. I'm using current Open Plotter on a RPi 4B.

I think I have properly used the sudo command to give permissions to scan BLE devices, the plugin reports Started status, but I don't see any data in Data Browser.

I'm not sure how to troubleshoot this, whether my issue is with the OS or Signal K or the Ruuvi. Any help?

Alan