RPI_RF - Unknown TX Protocol

I’m trying to get a RF transmitter working via hassio.
I have both receiver and transmitter, so I discovered the protocol, pulse length and all via an Arduino. I tested the outcome via the arduino with the transmitter and my shutters were going up and down. So it is working with the info I’ve got.
Next step I did was trying to setup following in hassio:

But somehow I’m always getting the “Unknown TX Protocol” in my system log.
It uses below library, but I’m don’t know why it is giving me this error.

Anybody than can help me with this?