It is true that F4 FC's do not have inverted ports to handle inverted protocols like SBUS and Smart Port by default (F3 and F7 boards do), and that is why many of the F4 boards have started coming out with a few ports that are inverted for these odd duck protocols, and usually label the ports as SBUS or Telemetry etc. The RX manufacturers also heard the unhappy people over this issue and made the un-inverted signal available on the RX on a separate small dot pad on the board somewhere, if you hook things up correctly they should work. Once you turn on Telemetry in BF and set the Port for the correct protocol (Frsky Smart Port in this instance), you should get a number of sensors from the FC through the RX down to the transmitter so you can discover them. Why you aren't getting anything besides RXBT and RSSI (both of these are from RX itself) I don't know, it could be the FC itself or it could be bad connection and configuration, but the config looks correct to me, but I can't be certain about the wiring.