My old iPad Air (1st gen) is on iOS 12.5.7 and can’t login to the Wyze app either, but it’s been like that for a while now. The latest Wyze app I can install on the iPad Air is 2.31.1.
Wyze announced that beginning of May 16 2024, the login function on older versions of Wyze app (2.44 and below) will no longer be supported. I tested this back in late May 2024 to confirm that I was not able to login with Android Wyze app 2.44 and below.
However, I think they made some changes recently because I was able to login with version 2.40 (any lower it won’t let you login) last week. I tested this on Android app.