Help! Ft gremlin won't arm

I purchased the ft gremlin about a week and a half ago. I bound my receiver and I can see my transmitter(Spektrum Dx8e) inputs on the receiver tab. All I had to do was put the props on. But, it wouldn't arm. I got arming prevention flags 7 and 17. I am confused about what this means. Does someone know how to solve this issue?


Eternal Student
You need to set up the channel endpoints in your transmitter using the Betaflight receiver tab as a reference. I believe it's called servo travel on Spektrum radios.