Have a look at the Firewall in Systems Preferences and ensure that both SooloosHelper and ControlMac are not blocked.
They each should have entries in the "Advanced" tab and should have "Allow Incoming Connections" next to them.
As regards the Sooloos IP Addresses, the Sooloos Cores many times seem to lease another IP Address after they restart as a result, I set it a Fixed IP Address using the Sooloos Config Program (Windows only).
That way, I always know what address to find the Core at in order to get the extra Information offered in the /Debug mode.