The RFXCOM uses the DD27xx protocol. Only motors that can be controlled by a DD27xx remote can be controlled by the RFXCOM.
Please check if your motor can be controlled by the DD2702 remote.
RFX detects all my blinds but i cant seem to get them to work. I know i need to add it as a second remote but not having the motor manual is not easy to find out how to do it. If anyone can help me. The remote is DD1600H and the portuguese brand is Falcon but it must be a rebrand from a chinese maker.