Multiple bugs with truecaller, whatsapp and Facebook after lollipop update

After updating to lollipop with a factory reset I having lots of issues starting with truecaller as I turned off the caller ID for my phone contacts but the floating caller ID still treats my phone contacts as its an unknown number for example if my wife calls me the contact appears as my wife and the caller ID floats and the contact name is my wife, for whatsapp the notfications doesn't always come on time ad I open it and I find that there are multiple notfications and it didn't appear on the status bar although notfications are enabled as for Facebook when there is a notfication when I press on it Facebook doesn't open so I have to open it my self, tried clearing cash and data and reinstall but nothing helped, any idea what can be done here.

MT2L03 Carbon 5.1.1 Multiple user (Guest)

I got Carbon successfully installed and love it! But one thing I miss is how easy it is to stop users from browsing my private data when I hand my phone over to them (Emui Privacy Protection, google (in quotes) Hide Your Contact, Album and App)
I figure with Carbon the closest equivalent is the guest account?
If it isn't, please clue me in, but if it is, my phone is limited to one user account when I can't force fw.max_users=4 to stick.
pm get-max-users keeps going back to 1 after every reboot.

Does anyone know of an alternative locking functionality to that emui awesomeness I had before? Or is there a way to make guest work?

Sorry to make y'all google above, I'm a newbie and am not allowed to add url's to this post :)