Vibrations issue with whatsapp (can't turn them OFF! lack of settings on the phone)

[AnnaSnow]

Hi...
Sony xperia z1 compact, android 5.1.1 because there's no other higher version to upgrade...
I've got also the newest version of Whatsapp, because the issue is about this app i guess.. maybe the phone. I hate speculating.

My SILENT MODE is turned on from 23:00 - 7:30
That time i won't receive any sounds nor any vibrations.

Today a friend of mine wrote me a message at after 6 AM and despite the silent mode i received vibrations and i woke up.
I am not "silly" to turn off or change my notifications in silent mode app. Nothing changes in settings including whatsapp settings and shartphone settings.
I turned off whatsapp vibrations everywhere i could - nothing. I tried to send messages onto my phone to check if anything changed - nothing. Each time i was notified with a new message by vibrating.

There's no way to turn of "vibrations" for whatsapp application on the phone, because there's no such feature - you're not providing it....

vibration is off: (SHOULD BE!)
see? "vibrate off">SOUND AND NOTIFICATION<there's no option with "vibration" and i don't want to block ALL notification from that app. for good. It shall work, but not when silent mode is turned offsecond dot > about 'vibrations" - no such feauture.... "whatsapp" "app notifications" - no such thing in sony xperia z compact!