Can it be expanded again so that we still have the rest of the package number digits as well as the secondary QR code (top right), which the carrier might use?
No, I haven’t changed anything: it’s Vinted that produces this Vinted Go code when you are on the web/mobile. It just outputs a QR code and nothing else…
You’ll see that when you output the PDF without « ink saving » mode, there’s no more information.
I don’t know where this trend of not sticking anything on packages and just using a QR code on a phone (also offered by MR on LBC) comes from. Because as soon as you have several packages to ship, it multiplies the risk of error; or else you have to write the contents on the package to avoid mistakes, which is almost the same as putting a label on it.