Default Problem with vibration and WhatsApp in cm11 4.4.4

Hi wanted to know if it is possible to reduce the vibration of the phone, as it is quite high, typing on the keyboard and give any hardware button (recents, back) and is quite annoying. My second problem is with whatsapp is that when I restart the phone, this message (screenshot) is always displayed and I have to set it again. How can I fix it?
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