Drag and Drop - score points don't add up
I've created a drag and drop interaction with 7 drag items. When you get them all right the score shows 9/9 (even though they're only 7 of them) when you only get one correct, the score shows 3/9, and two correct ones show 4/9 etc.
I'm attaching screen captures.
Why isn’t the total 7? And why isn't each correct answer scored 1 point?
I'm attaching the file
How can I fix this?
Thanks in advance