Help for Alexa viessmann and Somfy protec

Sorry for my english i use the translator
I would like to know how to connect my boiler Viessmann my boxing homey having a vitotrol 200 (connect with apps)
I am also looking to connect my alarm somfy home (my fox formerly)
and my last little concern is the connection of alexa with homey after installation of the skill then registration of account she can not find my homey
thank you