I solved all of the clues some time ago but can't fit together the top part of the grid. The problems arise with the entries for 3, 4, 5, 8 and 9, and particularly the first wiggle starting at 7. What makes me think my attempt is wrong is the message in the squares, which seems to begin CAED. I would be happier with CARD but cannot achieve that without breaking the rules. I have some ideas for the unclued octagons but not a lot on the unclued squares, and without the message it is hard to be sure about anything. Is it really CAED?