Thanks for reply.
No, I have no hub now. I have just remote controllers “Situo 5 var A/M IO pure II B”
Documet looks fine and brings a peace of hope into dark Somfy world. I’m OK to buy Tahoma switch (even a price) to use local API but have to be sure it really works. I’ve found different thread Somfy Connectivity Kit support for Overkiz and/or HomeKit so it looks really optimistic.