Default YouTube mobile new video notification

Hey plz help but on my XM(C1905) the YouTube mobile new video notification(I am not receiving any notification) is not working why is this?
Sent from my C1905 using xda app-developers app



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Phone: Sony Xperia M
Model: C1905
Rom: Stock 4.1.2
Build Version: 15.1.C.2.8
Kernel Version: 3.4.0
Bootloader: Locked

Phone: Samsung Galaxy Note II
Model: N7100
Rom: Unofficial Cyanogen Mod 4.4.2