Nope, you can't screenshot the page, so you can't save the code and can't send it to another phone. This means you can never trade in a phone for a new one and if your phone is lost or stolen you're locked out of all your accounts forever.
They actively added code to prevent you taking screenshots, which is insane but true.
I'm on iOS and I'm able to screenshot the QR code with version 3.4.0 of the app. Maybe the screenshot lockdown is limited to Android?
In any case, if you're trying to create a backup there are other avenues of capturing the QR code - offline digital camera is probably the most secure way of doing so.
They actively added code to prevent you taking screenshots, which is insane but true.