Thanks to both of you for your answers,

I had verified the option, and it is IR & RF that is selected in my software.
But this morning I tried to connect my MRF-250 to my devices, and my remote was working well, so it could be a problem with the IR Emitter in the remote or with my learned codes.
I didn't use the code database because the products have different "names" (reference), but I will try this quickly and will tell you how it works.

Thanks again to all

Queuf