The red box is because you didn’t allocate the pins in FZ Edit. Did you see and error of pins not assigned.
There was no instructions and no one to help on the forum when I started 2.5 years ago, so when I knew enough I made the video tutorial series. The problem is that people think it’s too long and don’t watch it - I shouldn’t have wasted my time -, but the 2 hours spend watching them - you can speed them up in the YT settings - will save you ten times that in fumbling around.