I installed this on iMac as well as Mac Book Pro. It fails to sync conversations at all. I uninstalled and then reinstalled with no joy. Disabled the firewall still fails. Disabled AntiVirus and it still won’t work. It will send ok, but that is about it. I am at a loss. It does work fine in Windows10 on my surface pro3! Is there no way to force a manual sync of the messages as opposed to just the contacts?
When you can, please email me at the address below so that the iOS team can help troubleshoot.
Please use the same title of this post in your email as a reference.