OK, everything is working. This item is sold through Amazon and all service requests have to be sent to the "online seller" through Amazon.
There are a few reasons why I found this system to be the one I wanted.
1) The controller is small and fits on the dash just fine. I don't want to look at the display all the time anyway - there are warning signals that will tell me if something is wrong.
2) It has a small solar panel on top of the controller which keeps it charged so there is no need to be plugged into the vehicle.
3) Service request are handled very quickly - I initially was contacting Carchet rather than the actual seller. After I fixed that I got answers within 24 hours.
There are some things I learned that I will share with anyone that is interested via a message.