telemetry module WK-CTL01-D, Binding problems

They need to be bound at once.
Make sure you don't use fixed id in your receiver. If it is bound with fixed id, you need to clear it first.
Then power up the tx, and within a few seconds power up both the receiver and the telemetry modul (they are probably powered from a simple source anyway).

When the rx (and the telemetry module) is bound, you can assign a fixed id if you want, and send it to the rx (and telemetry module too). That way next time you can switch the rx and tx in any order, they will still remain bound.