FNB link between online banking and banking app

Dear people at fnb: Your link between online banking and the banking app that is supposed to be opened when transacting is unreliable and not working due to fnb's own fault. When I phoned re this issue, the person told me that it is an issue with the app and my phone and the device isn't verified. So they've put me back on the otp verification method. Utter nonsense!! This was all working fine till a month or so ago. I've spoken to other fnb clients and they all have the same issue. If you are trying to force us to use the app and not online banking anymore, why not just tell us and take online banking away, so that we do not have to phone and listen to lies all the time. We know it's cheaper for you to maintain the app, so why first waste our time and money?