RRHMJ23, what voice commands are you giving it, exactly? The new Moto Voice on Z2 Force only responds to "Show Me" commands, e.g. "Show me the calendar", my day, my appointments, my next meeting, <app name>, etc.
For hands-free voice to make calls, send texts, ask Google questions, etc., you now need to set up Google Assistant voice control, then you can say "OK Google..." to perform all the usual Google Assistant functions.
For Moto Voice and OK Google to wake and unlock your phone, Trusted Voice must be enabled in Settings->Security->Smart Lock.
And, Smart Lock (Google) and Smart Lock (Moto Voice) must be enabled in Settings->Security->Trust agents.