I tried to claim the "additional 45 MB" for the Wireless Logic SIM included in the Thingy:91X delivery.
Unfortunately, the "claim code" seems to be only available via the printed QR code, and even more unfortunately, that QR code is printed in a too light grey.
That hardly works ;-).
I scanned it and tried to make the grey darker, so finally it works. But I would guess, quite a lot will fail.