thanks for the info.
It probably says 12 chips because it is an adapted version form the A1, which has 12 chips.
I you click on the 'stats' page you should see the temperature per chip. Could you post a photo from that? (I need the number of cores per chip and the amount of chips)
And at what frequency are you running it?
When you have indeed 10 chips per board you should be able to go to 40MH/s