Betaflight wont detect reciever

Transmitter - Eachine i6
FC - SPracing v1
Betaflight 4.0.6
My transmitter detects the drone, and the motors work in the motors tab, however the recievers tab does not respond. I bought it on Ebay recently, so I assume it is wired properly. I am also not sure what the reciever is. I am also new to drones so not sure what to do.

Thanks for any help.

hi what protocol are you using from the FC to the reciver (SBUS, IBUS, etc.)?