So isn't there a workaround to my problem? maybe change some of the programmable parameters, or changing the speed of the interface?

I already said the interface is OBDLink from ScanTool.net. I nhave also tried on fiat ducato and doblo and the same issue, it won't connect on CAN.

Also, forgot to say, FES is registered.

I have a OBDLink interface, I can connect to engine via k-line but not via CAN. The CAN works though in VAG engines. I have sent the error log, is from a fiat punto. Thank you.