Tivo Roamio Pro and MTR700 Tuning Adapter

I'm having issues getting my brand new Tivo Roamio Pro working. At this point, I can not view any channels. After working with one Cox CSR, he decided there may be an issue with either the CC or the TA(MTR700). I ran back to the Cox Solutions store and got another CC and a "brand-new" TA. Installed them and worked with another Cox CSR, but still nothing working. Gave up and have a service call scheduled for next Tuesday, as that's the first day I'm available. I am getting NO channels at all. In addition, the TA is NOT being recognized by the Tivo when I plug in the USB cable. Spent several hours researching on the 'net. Have found that there is known issue with MTR700 firmware prior to version 1.40 that will prevent newer Tivo's from connecting to them (TiVo not detecting TA). From what I've read, in several places on the net, the MTR700 MUST have version 1.40 to connect to Tivo's with newer security certificates. It's highly likely that the TA firmware is not version 1.40, thus the Tivo Roamio Pro isn't detecting it. As far as the CC goes, that I'm not sure. One setting that I know for sure that is not good is "AUTH:MP". Seems that TA issue has been around since November of 2014 and would appear that it's STILL causing issues. My concern is that nothing will get accomplished when the technician comes to my house next Tuesday. Can anyone here help me fast-track a solution? Thanks!