Is it possible that any of these issues are related to the way the Wyze app uses a browser session to complete the login process and the way that a device’s browser is (mis)handling the authentication handoff back to the Wyze app?
These topics might be instructive if that’s the case. In the first is a recommendation to change the “Block Pop-ups” setting, as that apparently resolved the problem:
In this second, someone was able to login after enabling JavaScript in Safari:
I don’t actually have any iOS devices at present, but a topic about logging in on Android might be relevant, because it also has discussion about changing browser settings in order to complete the login process for the Wyze app:
Scanning back through these, I recall seeing a mention in at least one of them about disabling a VPN in order to get app login to work. That certainly seems like another reasonable thing to check.
Hopefully these will bear some fruit until a more knowledgeable (and current) iOS user decides to chime in.