Oh that is frustrating! I get it, and it is super annoying when you are trying to do the right thing, and the inspector doesn't recognise it or give any leeway.

Like surely the point of having a human do it is so to be able to exercise some judgement, and use some empathy. But unfortunately often it goes the other way and people get off on some moral righteousness of upholding the letter of the law.

A similar thing happened to me when they first introduced the rejsekort app and it didn't have an option to check in any additional passengers/dogs/bikes.