What exactly is the device you bought? OBD GPS Logger relies on elm327 protocol to work and there are some devices out there that don't have that, it seems.
The way to test it is by using screen or similar. Try a few likely baudrates [9600, 38400, 115200] thus:
Once screen opens, hit enter a couple times. If you see ">", that's good, that's the prompt. Your two base commands from here are "ATZ" which is "reset" and should show you a device ID, and/or "0100" which is your base "ask the car *something*"
screen /dev/ttyUSB0 38400
To exit screen, hit ctrl-a then k.
If you see it working but then after a while things seem to stop working, or they stop working very soon, that's exactly the bug in 9.10 [although supposedly it's now fixed].