I was having trouble with getting microphone to work on my iPhone 5s (iOS 12.2) – ie. Speak Access Denied
Turns out Loki’s answer is correct – just the wrong route to turn it on (for my iphone an update moved restrictions, etc).
Try Settings > Screen Time > Content & Privacy Restrictions > Microphone (then turn on ‘Allow Changes’ & make sure ‘Wyze’ app is ‘on’. Likewise one may need to do the same for ‘Photos’ (in place of Microphone above).
Lastly, my phone was also missing the ‘Microphone’ icon & it’s on/off slider under ‘Settings > Wyze’ ie Settings > Wyze (mine only contained ‘Photos, Siri&Search, Notifications, Background App Refresh, & Cellular Data’).
Once I (first) enabled the restrictions properly, (second) fully removed the Wyze app (restart didn’t solve), then (third) reinstalled the Wyze app, everything was where it should be & worked.
ps, shout out to Kayla (on Wyze chat) for her help solving!