Complex sentence: Originally when this sort of error occurred, the clock was stopped and the contestant was given the proper response to their previous bid followed by two "free bids" (with the host responding normally), after which the clock started and gameplay resumed as normal.
Split into simpler sentences: Originally when this sort of error occurred, the clock was stopped and the contestant was given the proper response to their previous bid. The contestant was then given two free bids (with the host responding normally), after which the clock started and gameplay resumed as normal.