I am no longer receiving notifications (status bar or sound) for all apps, including SMS, except gmail and WhatsApp. This happened spontaneously. One day it was working. The next it was not. I updated to Android 10 hoping that would fix it. It did not. I've eliminated battery optimization, made sure the apps are set to receive notifications, high priority. Do Not Disturb is NOT on. Rebooted. I have followed all instructions I can find and still no success. I don't know what is wrong. I've submitted a "feedback" to OnePlus, along with many others who have all had the same problem. None of the questions have been answered. I am desperate. I'm missing important texts in a timely manner. I'm ready to do a factory reset but others, who have tried this, did not have success. I don't want to do this unless I know it will work.