I have now documented all the steps that were necessary and pitfalls that needed to be overcome to get our BTicino system in the My Home Suite for software configuration. Maybe this will help others facing the same task. Any comments or corrections are appreciated! 
And another question popped up: when trying to open the functions help in the My Home Suite, it tries to download the help files from http://myhomesupdate.bticino.com/MYHOME_Suite/EN_MHS_function_0305.zip, but that leads to an error saying the file is not available.
Does anyone by chance have the help files for the My Home Suite already downloaded?