Terrible App and Online Banking access

The Standard Bank App and internet banking is probably the dumbest and least user friendly out there.

So I tried to login to pay my bills (SARS) via the App and there is no option to pay my bills. Go on to online banking and sign in using my username and password, it then sends me to the app for some OTP I go to the app login and nothing happens, no OTP, wait for the 3 minute countdown and zero happens, try again and again and again and nothing happens in the app. I try to scan the QR code it gives me an error, 'unauthorized call', try again and again and I get the same result. How the hell am I supposed to access this ****ty online banking when all presented options don't work.