Welcome to the Forum, @akira13126!
When you launch the Wyze app on your phone and tap Get Started, the app opens your phone’s default browser to log you into your account, and then the browser is supposed to pass you back to the app once it has the authentication token. Is it possible that process is broken here since all the apps and settings on your phone are freshly at their defaults? I wonder if you need to change a browser setting and if this topic might help:
If that particular post doesn’t provide an answer, then maybe something in that topic will.
Edit: I just re-read your post and picked up on this part:
That part has me confused. I don’t have an explanation for that. Just to try it myself, I logged in via Opera on a PC and can get into Wyze Web View without any apparent problem.