Sending 0100 Unable to Connect

[Palmin71]

So I recently received my freematics mega kit with OBD-II UART Adapter and Arduino mega. I'm not really great with programming but I followed the steps that were in the developers guide. When I finished it, I uploaded the sketch to the Arduino and everything was going well until I got a message saying the following:
Sending 0100
Unable to Connect
>
Sending 0902
Unable to Connect
>

Any solutions?
P.S(Tried Connecting it to my Ford Explorer 2003 to see if maybe it had to be connected and still gave me the same message)