can not get last two weapons' set points

I made sure that i have completed the below in both act runs to get 24 weapon set points but i only have 22:

- Crobell boss 2 times
- the lost lute quest 2 times
- kabala boss 2 times
- tradional tole quest 2 times
- mighty silverest boss 2 times
- sacrfice heart 2 times

I went to all to make sure i did not miss them. I only have 22 points.

What went wrong?

Have you double checked that the act 1/2 normal/cruel NPCs aren't still holding a skill book?

If you're on controller, at Una, you'll have to try to navigate above the song selections to see if she has a quest reward for you.

thanks for the comment. I checked nothing pending. I am a PC player. My only explaination is that i sold quest item by mistake when i was still learning the game. If that is true, how can i fix that>