cant receive any whatsapp and snapchat notification after updating android system on my Galaxy S7

[justinzxc]

after updating the system,i cant receive any notifications.
-My power saving is not turned on
-i enabled notifications on both apps
-tried reinstalling but to no avail

EDIT:
tried the cache wipe but still not working

 

[Tim1954]

Cache partition wipe would be my first move...