If FrSky telemetry modules (DFT/DJT/DHT) work with non-telemetry receivers in its V8 mode without putting modules into binding status in its two way mode first, modules will fail to get the correct ID (in other words, modules will have the same zero ID). 

Users must put FrSky telemetry modules into binding status in its two way mode first to get the correct ID(this step can be done without binding with telemetry receivers), and then switch modules to required mode.

Below is the procedures:
1, Put the module into its two way mode (both DIP switches on the module to OFF).
2, Turn transmitter on while holding F/S button on the telemetry module. Release it in a few seconds. RED LED on the module will flash, indicating the module enters its binding status.
3, Turn transmitter off and switch the module to required mode.

It is isolated to certain batch only, and above procedures need to be done only once.

Sorry for inconvenience that has caused you.