Standard bank app not allowing login

I have been with standard bank for years-11 to be exact. I think they are a good bank except for the fact that their online services seem to crash almost every month end, and their cheque card will decline when you swipe it (also around month end). My issue now though is about their app, which used to be great. Since the latest update the app will not accept my login details. After asked to enter my email address, it then takes me to a page where I have to enter my card number and atm pin associated with the account. It then says "the details I have entered do not match the details they have on record".

I have sent feedback via play store review and see that many people have logged the same issue since the begining of the year, but there hasn't been any response on how to resolve this.

This is very inconveniencing given that the standard bank online banking platform is not as user friendly as the app is.