Wyze has no issues connecting to a 2.4 GHz network where there is a 5 GHz network present with the same SSID. I have several installations I’ve worked on where SSID is identical for both frequencies (stupid in my view, but some mesh network providers believe in that philosophy in order to provide a seamless service, and I can agree to it to a certain extent).
But once again, it has to do with your (phone/pad) device when setting up the new Wyze device to add to your network. Once you have set up the Wyze device, from a “Wyze standpoint”, the 5 GHz does not even exist (Wyze can’t see it).
But I can agree that it is a bit unclear in the app, as the app will list even a 5 GHz network. But that is not so much an app issue, but an issue with API capabilities in the phone. If phone cannot report “hey, I’m on a 5GHz network” the app cannot “show alert”, telling the user “hey buddy, you are on a 5 GHz network and need to connect to a 2.4 GHz” in order to proceed.