Replaced every light switch in the house with a variety of single, double, triple, and one 4 gang switches, including some two way switches. All switches installed by an electrician.
While the actual switches work as switches, and single gang switches can be controlled by the alexa app, the multiple gang switches aren't able to be detected correctly by the app. One scene switch is detected, but when attempting to configure it, the alexa app crashes.
One big downside, there is a high pitched humming coming from some, not all, but some of the switches. This is extremely frustrating for some in the house.
Really quite surprised by this, given the overall extremely positive rating everyone else is giving these things.