Sometimes you just have to let it sit. Even if it says connection failed, What I have done is leave my phone on the QR code screen and let the camera sit for awhile. After a few minutes it will say connection succeeded, even though it previously said it failed. Then continue on your phone. Can’t guarantee it will work but give it a try. Wyze hs a lot of work to do on this. Giving out work arounds that involve reconfiguring a working wifi environment should not be the norm here and should be discouraged.
As a side note, the Dafang firmware connects to any wifi you throw at it. Not recommending it for a normal use case, but point is, it’s a software issue not a hardware issue.