Steam Achievement Bug :sultan

steam Achievement Bug :Sudanese achievement(Complete the Rise of the Sultan campaign)
Cannot be unlocked successfully
As you can see, all the other achievements have been completed, but only this one cannot be completed, and the in-game My Game shows that Chapter 3 is not completed, and then Shajjardur’s avatar is not available, and the final reward for completing all the campaigns has not been awarded
why tf?
steam China player

WHY devs seems to just ignore the issue?
This has been going on for almost half a year