Roon Help Please

When I finish installing the Roon integration, its related activity, and UI, three buttons (rewind, forward, and press/pause) do not work . I mapped these buttons to the commands of the same name from the DAC entity. [hope this is clear] It seems like these are virtual commands created by the integration process; the DAC itself isn’t directly “commandable”.

This setup seems like a reasonable design to me, but I am a “babe in the woods”. Am I using the correct command set on the UI (the DAC’s)?

Can anyone suggest a troubleshooting step? I have thus far: reinstalled the integration and recreated the activity, rebooted everything, and confirmed a ‘connected’ status for the Roon extension. All integrations and OS versions are up to date.

Many thanks.