murano remote start problem

Not sure if the units I use / prefer are offered for sale in Europe.   Each country has it's own rules on transmitter frequencies, etc.  You should check with a few major manufacturers to see if their products are compliant with Slovenia's regulations. 

Directed makes the Viper, Python and Avital units ( among others ).  Here is a link to them :    http://www.directed.com/  They do offer training.

Compustar is another quality system manufacturer.  Here is a link to them :  http://www.compustar.com/

Audiovox is another major player in this industry.  Here is a link :  http://audiovoxproducts.com/

You used a FLCAN bypass module for your Murano install.  The FLCAN is actually made by ADS iDatalink and called the ADS AL CA bypass module.  Here is a link to their WEB site :  http://www.idatalink.com/support  Additionally, there is a site for Russian language and product support at : http://www.12voltdata.com/russia/