I have had issues with more recent cups versions where things like choice of paper tray and paper size was handled differently (compared to older cups where defaults worked). At least in some cases I was able to make printing work by making certain choices, such as selecting “auto” for paper tray and/or selecting a particular paper size, or “auto” there too, or the other way around, anyway fiddling around with those settings.
It is, for me, always annoying that there seems to never be any decent error handling when it comes to printing. If anyone knows how to debug printing issues in a meaningful way (such as getting an actual error message or even a log showing in more detail what happened), please share how to do that!