presentation and problem with copying garage remote control

Hello, I am a new FZ user and I wanted to copy my own remote control, the remote control would be JMA EM UNIV, frequencies 217-433, reference EM2. I have tried automatic, manual and raw search, and I can only detect something at 300 MHz but not being able to open the door, let’s see if someone can tell me how to copy or link with the receiver so I can use it. Thank you

Try the frequency analyzer, then see if that tells you what it is sending on, and if you can copy it, then you can also try read raw on that frequency if that works better then regular read.