OK, I am going to answer my own question. After rereading a few things. (I read all of this thread, which is crazy long, weeks ago.)
Somewhere along the way the OP needed to have some settings changed on his inverter in order to make it work properly. It was not possible since the setting/s was locked out to the OP. So someone from Signature Solar/EG4 had to go online and access his inverter "remotely" to make the changes.
I find this rather odd, and honestly a pretty big turn off. As I don't recall there being anything really odd about this installation.
Perhaps James or someone from SS/EG4 can clarify how this all works with this inverter.