The way things work best is if you answer fully, completely and honestly with an eye to making it easier for people to help you.
Let’s go back to my first question:
I’m asking because in your screen grab:
You’re UserID is “orangepi” on hostname “orangepi”. Are you saying that when you imaged your Raspberry Pi 4, you set things up with “orangepi”?
Next, I asked for the process you used to set everything up and you’ve provided me with a 26 minute video.
I’m not going through the whole thing - but I did scan it and I see that the person making the video seems to use a very non-standard way of imaging the Raspberry Pi. That’s a big red flag.
Again, could you write out the process you used for imaging your host and how you built your firmware and loaded it into the Octopus Max EZ?
As for my last question:
You’ve answered:
What does that mean?
Did you run the ls /dev/serial/by-id command in the last half hour and what did you get?