I believe this may be related to another issue which I’m experiencing which is some wyze cam feeds are not being accessible on my Echo Show devices when I ask “Alexa, show me [camera name]…” The workaround someone discovered is to go into the Wyze app and rename the cameras that are not being accessible. Once renamed, go into the Alexa app and delete that camera and get Alexa to rediscover the camera. Once it is re-added, that camera’s device settings will have the Announcements tab.
However, this is only a temporary workaround as after a day or so, the device settings will no longer show the Announcements tab again (and the camera will no longer be accessible from the Echo Show device).
There is another thread that has more info and a response from Wyze’s development team: