Quite simply to reimburse me the day's pay that I was docked by my employer as a result of missing the flight due to their equipment failure. This was all documented with an exact figure easily justified.
LOL good luck with that one. In what world do airlines compensate you for a lost day's pay even when it is clearly the airlines' fault (eg a delayed aircraft)? Not Planet Earth. That's what travel insurance is for. You should have bought it.
Also, perhaps you should have gone to one of the other 7 bag drops machines that were working after you realised yours was not working?