I’m not sure what kind of phone you have, but normally pressing the lock button and home button at the same time takes a screenshot. You then would email the screenshot to your computer. There are also additional links below that users have had similar issues.
I just received my 7 cameras but when I try to install the first one in the app, I can only get to the QR Code scanning screen, the camera does not pop up so I can scan the QR nor is there a button to press to “scan” or in this case activate the camera for scanning.
Im on a Google Pixel XL phone running Android 9 security patch Feb 5th 2019
SO… if you are still having problems – you removed the protective plastic on the lens, cleaned the lens, tried different lighting situations, yada, yada, yada… TRY MAKING THE QR CODE BIGGER. On my android phone, I had great success when I changed the font settings to small, which in turn, at least on my phone, made the QR code larger. After making the change, all 4 of my Wyze Cam Pans easily scanned the code and were up and running. Hope this is helpful.
https://support.wyzecam.com/hc/en-us/articles/360019706632-Setup-Mounting