Is this the same Trafic that the AA could not connect to?
Forget Can Clips from the Bay. The only good ones are Renault's own. Which remain Renault property, as does their software. Those you mention are just pirate copies & not very good ones at that.
I have an ELM327 Wifi which I use with Torque App (Android) which works well on engine stuff, but nothing else.
To get the rest of the Vehicle one needs to spend £100's as you have found.
Just my 2d worth
You have bought a cheap scanner since you have had your tragic.
Yours is 2004 , should connect.
Anything else not worked on your van since you have had it....