Just thought I'd post this if anyone else is struggling with their cable not connecting to the vehicle.
I have the ELM327 suggested on here to use my forscan. Irs been a nightmare with me sometimes not being able to connect at all, then sometimes it works.
It's suggested that it's driver problems with these clones.
After reading a different forum, I bought and tried a vLinker FS. Had to go on their site to download some drivers, but it worked straight away.
And has worked on trying a few times.
Just thought I'd suggest it if anyone else was close to tears trying to get their clone dongle to connect.