Whats up with level 9?

Like LuluinGA, cant get past level 9 because all the yellow arrows turned into red keyholes that dont open. All the special items drop off the board and disappear, including the red keys, so nothing is there to use to open keyholes, and nothing mentioned in Help about how to use items previously acquired or where they go. Theres a jewel box at the bottom right, but it doesnt open, as far as I can tell. A little more clarity on what you are supposed to do would be good. Its enjoyable to play, but mysterious.

NCW33 about Gems Match3