There is a false positive related to Nubank services. Every time I tried to access the e-account in the app window, a pop-up was shown saying that I needed to authorize the device. And because of that, I was unable to make bank transfers. The problem was in the adguard filter system. It blocks one web request and caused the problem. Since I started using adguard, I have never face a problem, except that one. So, if your nubank app starts to show that pop-up, you know what to do.