This feature is still in the works. For everything to work smooth it does require some additional changes to be made to other code. We just want to make sure that everything works properly before we release it.
Thank you for your suggestion. Very soon we will be significantly improving the address book in the mobile client and make it look very differently and much closer to how it looks like in the desktop client. That's why it doesn't make sense to make little improvements now, provided that there's going to be a big revamp soon anyway.
Currently on viewer 126.96.36.199 trying to push out a 188.8.131.52 MSI.
This looks like a version mismatch. The Viewer checks the Host's installer version against its own version before the update.
It is highly recommended that you first upgrade the Viewer to the most recent version (184.108.40.206) and then upgrade your Hosts to the same version. Having different versions of Viewer and Host can result in unpredictable behavior and issues hard to diagnose.