Phottix Odin not firing YN 568 EX3. Reasons?

[Parisienne]

Hi everyone,
Recently bought a used Phottix Odin V1 controller, and receiver for my Canon 80D, and Yongnuo YN 568 EX 3 flash.

Set the camera, flash, and Odin system up. Problem is it won’t fire the flash.

The Odin units are synced and ’talking’ to each other, the flash lcd screen reflecting settings made, and the flash fires when I press the Test button. Tried both TTL and Manual modes, to no avail...

Any thoughts?

Pat