Is John's TX using latest firmware? I would email Richard at T9 and he will ask you to send it back for testing. I have had only one issue with FRsky RXs and that was with an ACCESS R4 which would not register. Replaced with no problems
I sent the Rx back to HobbyRC and they promptly advised that the Vario had been switched off in the Rx. This is done by holding the Bind button for 3 seconds after it has bound, something I accidentally did without realising. The Rx is back with me and all is working well now.
The following user(s) said Thank You: 4Pedalsfly, Phil Ford
Good news then. This is the common problem with Frsky or any Chinese manuals, they don't always read back in English in a clear and precise way. As Rick has found out about holding down the failsafe/bind button. On another note, Access does away with binding once the RX is registered.
Which brings me to another item - I have a few Frsky S6Rs and S8Rs for sale as I don't use them. Money goes towards an Access R8Pro