Hi i was looking for this case for a long time ,now i got the solution
The thing is listening part need 1 point extra than other modules
listening 7.5 = 5 points
reading 6.5 = 5 points
Writing 6.5 = 5 points
speaking 6.5 = 5 points
so totally 5+5+5+5+5 = 20 (not qualified) :( We need 21
So...