My bank decided that the online banking website needed to be more like the app, so now they are both terrible. Basically the entire site is white space on the computer, because everything is centred and dumb down. Input fields for numbers are invisible, they are just a label saying "Kr" and you're suppose to click it and the numerical keyboard on the phone pops up, except it obviously doesn't on the computer.

Paying billed is easier on the phone in the sense that bills in Denmark have a three part number, e.g. +71 1234567890 1234678 where the first is a type number, second is the receiver and the last is a customer number with the receiver. The phone allows to just use the camera to scan the number.

Transferring money is terrible on both platforms, because it's designed to be doable on the phone, meaning having three or four screen, but it gives you no overview. There's plenty of space on a computer for a proper overview giving you the feeling of safety, but it's not used. Same for account overview. Designed to the phone, but doesn't adapt to the bigger screen and provide you with more details, so you need to click every single expense to see what is is exactly.

I've had the same thing happen. Huge buttons, a lot of whitespace, little functionality in the default web version. To deal with stocks and such, the old version is still available somewhere.