Ring doorbell 2nd gen and Echo Show 5 voice command problem

Hi. I dont see any references to this problem, so maybe it's only me that has it - but.......... If I voice-command my Echo Show5 to show me 'Smart-home', it does so, and there is the button for my Ring video doorbell. If I tap the button, it shows me the live view from the doorbell camera. But for the life of me, it won't show me the cam view by voice command. I have been round in circles through the 'skill' instructions without any joy. Am I the only one having this problem, or is there something blindingly obvious I am missing ? Any help would be gratefully received. Thanks.