when switch on wyze camera og telephoto camera red light blink 4 time and pause for 10 seconds with no sound how (even without sound) initial setup runs normal detecting camera and after network selecting it shows message Adding device but in few seconds it shows setup fail.
Sounds like bluetooth is connecting fine to the camera but the camera may not be able to connect to the wifi network. Try setting it up near your router, and also ensure your router has 2.4ghz “n” wifi enabled.
Obviously make sure you have the wifi password correct.