Issues binding transmitter?

[dotifo]

Hello, I am new to all of this and have a DJI spreading Wings S900 with an A2 receiver, 2 DSM2 satellites, and a Spektrum Dx6i Transmitter for use in a college senior design project. We keep attempting to bind the receiver but in the DJI assistant program even though RC status says normal (so we know it sees the remote) and the lights on the satellites turn solid, the transmitter does not have any effect and an error pops up that says "Receiver Connection Error". Is there something we are missing to get the transmitter to bind properly?

 

[RENOV8R]

Need a little info on what receiver you're using, as A2 is the flight controller. But I guess my biggest question is why the hell are you using a DX6i on a S9000 that's worth a few thousand dollars????? Just sayin.......

 

[dotifo]

Need a little info on what receiver you're using, as A2 is the flight controller. But I guess my biggest question is why the hell are you using a DX6i on a S9000 that's worth a few thousand dollars????? Just sayin.......

We did not purchase any of this, it was inherited from the previous team working on our project. They purchased everything right before graduating and never got around to using it. Could you give us some info on what to look for as to what our receiver is? It seems the connection goes straight from the satellites to the A2 controller

Edit: It seems we own a DRX R615X receiver but have no idea where to connect it