It easy until the app doesn't work for two weeks.
Context. My online banking app suddenly doesn't work for about two weeks, for some unexplained reason. I can still access my account through a website with a browser. But I can't do any transaction because I can't receive the TAC verification because the app doesn't work. It used to be send via phone massage. But after reinstalling the app and land on the screen. I can't opt-out from receiving TAC via the app.