I also had the problem with logging in and called pnc was told it's something with certain android phones saying the app is updated but it's actually not updating to the correct version and it's causing issues for some phones. Pnc did not fix the issue but after these steps it worked for me. I went into my phone app settings and cleared storage and cache from the app settings. Then I Uninstalled the app. Re downloaded the app put in my credentials and finally was able to log in. Hope this help