I am facing the same issue with my setup. But I am behind a rather strict firewall and since I needed Jami only for conversations purely in LAN, I did not think much about it. I have been facing issues making LAN setup work too, and I have a separate thread for that Troubleshooting Jami setup in LAN - #8 by gk1089.
What addresses need to be permitted in the firewall for the registration process to work properly? Or as @Oskar pointed out in his post above me, there are bugs in the latest release, have they been reported and identified in the development process?