You just need go to the configuration tab on cleanflight and make sure to set the receiver mode to RX_PPM, you also need to make sure that your X4R is setup in CPPM mode and not SBUS mode.
You just need go to the configuration tab on cleanflight and make sure to set the receiver mode to RX_PPM, you also need to make sure that your X4R is setup in CPPM mode and not SBUS mode.