I tried this method.
When I clicked to take picture the apps auto closed.
Maybe they need to fix this bug.
Yea its been reported, exactly the same.
Just realised you can create a user from an electrum(or other) privkey too ...
Just goto "import your backup sigIn/Up local account" > Scan backup > Scan PrivKey QR from your desired wallet .. sooo many possibilities would love it to hit github!