I too had the same issue. I just removed my custom AOD and after a
restart I started recieving notifications. Remove all the custom themes
or icon packs you have. Worked for me, might work for you too.
It turned out that all my 40gb of data was on the cloud, so i didn't
lost any. After factory reset first login all your clouds back in and
then check what's left. I u think something is missing then use
diskdigger(buy it if u want or find a crack). I...