Text msg notification problem

I have the S5 Neo and ever since I updated to the nougat software my SMS notifications are not the same.

When my phone is locked sometimes I will hear my notification ringtone for a split second then it will cut off half way. Other times my phone never notifies me of any SMS's. And it does not help that the text message notification will not stay on the lock screen, it will show for a split second then disappear.

Also that the text notification will not appear in my notification bar at the top of the screen.

PLEASE HELP ME IT'S BOTHERING ME SO MUCH!!!

Do a cache partition wipe after all updates. Reboot the phone and like around in your settings to make sure nothing has slipped..