Advice needed Reedy 410R

[Roscopeco]

I'm having trouble with my 410r ......

I bought it 2nd hand and fitted it into my k1 aero , turn the power on and it will work however it won't brake .

I've read the manual on setting it up and even watched a video on YouTube but I still can't get it to set the brakes . In set up mode one flash on green light to set full throttle , 2 flashes to set neutral and 3 for brakes .

It won't get passed 2 flashes ( setting neutral )

Getting aggravated

Can anyone help ?