Do you have the Castlelink adapter and software ?

Change your ESC settings to the following

Start Power - High
Timing - 0
Punch - Disabled
Torque Limit - Disabled
Reverse Type - With Reverse
Brake - 50%

Then do the following

Centre your throttle trim
Set your throttle / brake EPA's (travel) at 100%

Calibrate ESC to your transmitter

If it does not recognize full throttle or full brake take the EPA's out to maximum and try again

If it still does not work change the throttle deadband to maximum (0.1500ms)

If it still does not work rollback the firmware in the ESC and start again

Cheers