Rip it and start again!
If this is to replace skype business, then it is a very poor replacement solution.
Issues importing business contacts, unable to see who is online easily.
Not easy for users to see at a glance what we need without all the other junk getting in the way.
All in all a very poor replacement and we will be looking for a skype style replacement and cancelling the package we are on, possibly a WhatApp style replacement.