On command connection

hey guys! I have a question that came up. I have no clue what to do. So i just became on owner op. Got a truck international prostar cummins isx 15 with 266k miles on it. And i also got a on command connection because i m a scared type of person. So i got that system , so that if any check engine light or anything comes on it will tell me whether or not to take it to the shop right away or not. I just registered it today and they told me it takes upto 24 hrs to get it activated. It got activated in the middle of the day. And when i opened it, it said SPN639- FMI12 (11) and J1939 network #1, primary vehicle network: bad intelligent device or component. After that i got scared and i started searching online and first of all it didnt have that code any where with the same SPN and the same FMI. But whatever i found said that there should a engine deration and a check engine light on. But nothing like that has happened yet by the grace of god. But i m taking it to a shop tomorrow and i dont know what to do. Because i dont know how big of a problem this is. But i would love some advice from anyone. Thanks