Well, I contacted AT&T last night and provided them with my Flytrex IMEI number. They did say that it was needed since it was a non-AT&T device and claimed to have linked the new IMEI number to the go phone SIM while I was on the phone with them but that did not seem to make a difference, still a solid blue light. I then tried to check / update the APN information but the application was "sketchy" at best in trying to connect with the Flytrex unit. I did get it to connect once but it appeared not to have read anything (all fields were blank) and upon searching the web I wasn't quite sure what I would have entered in there anyway (name, dsn, etc.) for AT&T since I had seen various answers for tablets, smart phones and watches.
The only thing that did appear to work was the firmware update from the wiki page although I am not sure if that was even current or not.