I have a fli 14+ receiver that works currently with my flysky radio. I got the jp4in1 module with the latest multiprotocol firmware installed. I can't seem to bind the fli14+ to the jp4in1. I have the Flysky2a protocol selected in the external module and the green led is on, but it won't bind successfully. I have tried PPM IBUS and PPM SBUS options.