Well, not entirely true.
Let me try to explain. Untill about a week ago, everything works okay, but then the SD card for the Pi crashes, and of course the backup didn't work
Thought of reinstalling everything. And at last I installed the CoCo switch again with the remote on the RFXcom device. Now, I can either let the blinds go completely down (or up in inverted case), but not the other way round. Also, normally, when pressing the same button again, the movement would stop. No longer I'm using a Raspberry 3, with RFXcom transciever. The transciever is set to firmware Version: Ext2/1025, and the following modes: Lightning4, X10, ARC, AC, Rubicson, BlindsT0, Blinds T1/T2/T3/T4, LaCrosse.
If I use the remote for the CoCo unit, I can do all I want with it.