Question No Notification Sounds

Its a bit weird, but i get no notification sounds at whatsapp, sms or email's.
All my three Soundvolumes are on, but still no sound if i get a message at whatsapp.

I'm on 4.3 rootet iHackers ROM with iHackers v2.0 + Doomkernel and unlocked Bootloader.

What can i do?

Edit.
Now everything works fine. The weird thing is i have changed nothing.