Ah, thanks for the screen shot! It was the use of the word 'dashboard' that had me confused. Endpoints. I was thinking the dashboards we configure to interact with the hubitat system (as oppose to where we code pistons)!.
I am not using custom endpoints. I am not running webCoRE on either a RPi or in a container simply using the default cloud.hubitat.com for piston management. Have I missed a required step somewhere?
FYI: I have deleted and restored HSM once or twice trying to see if that would resolve this. Obviously it did not.