Thanks Fingerblaster. Found the issue. In settings search for Special Access and select it, scroll down to Notification Access and select it. Scroll down to your default launcher and toggle it on. Done..
Looks like I won't be taking the hammer to the phone just yet.
Hi! Can you give more details what you meant by "default launcher"? I don't find any app that would qualify for this. I try to attach a picture with my options, maybe you can suggest what should be on.