In general, when you have this kind of bugs, it have to do with transaction amount limits which looks like they are a mixed bag of rules from the terminal and t

In general, when you have this kind of bugs, it have to do with transaction amount limits which looks like they are a mixed bag of rules from the terminal and the card itself. In the early days of mobile payments, I remember that some terminals were configured to enforce the legal limit for contactless cards (which was 30€ IIRC) even if you paid with mobile. I haven’t encountered this issue for the last few years though, I even forgot my card PIN.