As a side now, in case anyone is having a problem binding the X9D Taranis and X8R, sometimes if there was a large gap between you ordering your radio and receiver they could have different firmware versions that are not compatible. So it might be worth checking to make sure they both have the most recent firmware.
Also recently all of our X9D Taranis radios ship with EU firmware, so if you are trying to bind with other receivers you purchased a long time ago, or from a non EU seller, you might need to update the firmware, we have a quick gude on updating Taranis firmware here