Android oreo notifications not working?

[Android Central Question]

My Samsung egde updated to the Android Oreo last night. My whatsapp, email, messages notifications have been changed.

Previously I changed the settings from WA msgs showing on the screen if i was using another app but now I can't seem to change it when though I changed notifications...it just does not save
It vibrates with a msg popup for every single msg..
Please help

 

[Daleylife]

I've had to add almost every app I use to the "unmonitored app" list. And in some cases, notifications STILL don't work.

 

[Will_T]

This will fix it:

First you need to follow the guide in the 1st link below through step 11 to get ADB working on your computer and get your phone into Developer Mode. Stop after step 11 and then go to comment #83 in the 2nd link below and follow that.

https://www.xda-developers.com/uninstall-carrier-oem-bloatware-without-root-access/


Read comment #83 in the link below where I described my final version of the fix.

https://forums.androidcentral.com/android-pie/904647-notifications-delayed-stopped-4.html