Shown below is a recording of said issue: Talking to Joe in the Piano Room also does nothing, he just says his default text and nothing else or any quest indication.
If any of those keys are from before today, they are considered a different item and won't count. If you throw the ones you have away and collect fresh ones it should work.
Not sure about having untradable quest keys, but I just picked up some fresh tradable keys and it's not registered in the quest either.
Thank you for reporting. The bug has been fixed in this unscheduled maintenance, the mobs will now drop the correct items when the quest is in progress, and existing items in player inventories have been swapped to the correct versions.