Multiecuscan

HI I tried a lot of versions of multiecuscan (registered) on this KKL cable connector. But always when I press Connect it writes - Connection failed You need ELM327/OBD key interface to connect to this module.
Test of interface in settings was succesfull, only connecting wasn´t. So here I am please help me.

I repeat again. For the Fiat 500 YOU NEED AN ELM OR OBDLINK INTERFACE AND **NOT** a KKL interface.