Hi and
to the forum.
I have never used or programmed the VEC500 so I'm not sure what the connection procedure is, but if it is anything like the MP4 and Smart Pie 4 vector controllers that use the same programming software you may need to turn the battery power off and back on again after the time out error message appears to allow the controller to connect.
If that doesn't work you will need to contact David at GoldenMotor China
and see if he can help.
Alan