You missed your chance to get the first clue. Three were minted and 2 people got to them before you did. Look around though, you may find them up for sale by their new owners.

Don't worry, no need to FOMO just yet. If you unlock this piece, and use your amazing deduction skills, you should be able to pick up on what's going on.

I sent the two holders of the first clue a key to the next step. That "key" is not necessary to continue, but having it would make your life a whole lot easier.

Anyway, good luck