QR-code dont show

Where are you expecting to see the QR code and what QR codes . . . Do you mean on the sites you visit not actually Firefox.. Did you recently update, could it be that?

https://support.mozilla.org/en-US/questions/1429130 https://support.mozilla.org/en-US/questions/1308787

I'm also experiencing this problem, and I'm also in Denmark. I'm seeing the problem with one specific app (I suspect that identifying it may fall into the 'sensitive information' category).

I first encountered the problem several days ago, but because I thought it was a temporary hiccup, I didn't pay much attention to it, so cannot say with certainty when it began.

Firefox, my OS, and my iOS (I'm on a Mac and using an iPhone) are up-to-date, and both units are the same ones I've been using for a long time.

I contacted customer support for the app in question, and was told to use a different browser; though this does work, I'd really prefer to stick with Firefox.