Only a week after my letter came with my new Scottish certificate with a qr code, a new one has come with a note saying there's a new QR code. I tried it on the German app to see if it would generate a certificate and it didn't, saying invalid signature.

I downloaded and tried it on the Swiss app, and while it generated a qr code with all the right information, it said invalid signature in big letters under the qr code.

This then leads me to my question, my Irish and French ones generated off my qr code, are they actually valid for EU travel as EU digital passes or are they also with invalid signatures but the apps don't say it?

For what it is worth, I used my Irish and French apps, scanned from my Scottish certificate, to enter venues in Ireland, and both worked fine and were scannable. But I've not tried using them to cross a border.

There's certainly nothing in my Irish one or any other saying it's not valid as an EU digital pass, Indeed the Irish one very clearly says it is.