I have a galaxy A11 and was receiving pop up messages from Whatsapp and emails in the morning July 12, 2020, however, now I am not receiving the pop-ups. I have to go on the apps to actually see that I have received messages. All the notification settings are turned on but nothing still comes up. When looking at the app itself before opening, if a message is sent you see where it flickers once but it doesn't stay constant and you don't see the message at the top of the screen. This problem was occurring before I did the new software installation later of said day. It's very annoying not knowing if you have received a message or not before going on the app. Please advice.