Improve error displaying

[chedieck]

Right now is not even red, also maybe we should blur the QR code or something?

[Klakurka]

Yeah the QR code should be blurred out -- in fact we already do this in at least one case... I'm just blanking on when that is but we can reuse that for whenever there's an error.

[johnkuney]

Is there more to do here? Looks like there is a red error message and the QR is blurred now on an error