Ans : You should check the following?

  1. You have entered the same port number in OpKey Recorder & SeleniumIDE->Tools->OpKey Settings
  2. You have clicked on Start Recording in OpKey Recorder
  3. You have opened SeleniumIDE for OpKey in firefox and not the SeleniumIDE
  if all above doesn't works, then contact us -support.opkey@crestechglobal.com.