Today I paired my 7 new Somfy Oximo IO rollershutters with Velux KLF 200 and afterwards with openHAB2.
I would like to praise this fantastic binding. Everything works flawlessly and straight away. Support of @gs4711 also was excellent. Thanks a lot! 
P.S. Had a little problem with API password at the beginning. It is the same like the Wifi password. But Guenther also helped me immediately.
P.P.S: Integration with Alexa also works.