Very strange !
Here is what I found on CDG-HKG:
AF 188 CDG 23:15 HKG 17:05 +1 772 0
Tue 20/09: P9 F8 A4 J9 C9 D9 I9 Z9 O9 Y9 B9 K9 H9 W9
Wed 21/09: P9 F8 A4 J9 C9 D9 I9 Z9 O9 Y9 B9 K9 H9 W9
Thu 22/09: P9 F7 A4 J9 C9 D9 I9 Z9 O9 Y9 B9 K9 H9 W9
Fri 23/09: P9 F8 A4 J9 C9 D9 I9 Z9 O9 Y9 B9 K9 H9 W9
Sat 24/09: P9 F7 A3 J9 C9 D9 I9 Z1 O0 Y9 B9 K9 H9 W9
Sun 25/09: P9 F8 A4 J9 C9 D9 I9 Z9 O0 Y9 B9 K9 H9 W9
Mon 26/09: P9 F8 A4 J9 C9 D9 I9 Z9 O5 Y9 B9 K9 H9 W9
Tue 27/09: P9 F8 A4 J9 C9 D9 I9 Z9 O9 Y9 B9 K9 H9 W9
Wed 28/09: P9 F8 A4 J9 C9 D9 I9 Z9 O9 Y9 B9 K9 H9 W9
Thu 29/09: P9 F8 A4 J9 C9 D9 I9 Z9 O9 Y9 B9 K9 H9 W9
Fri 30/09: P8 F4 A2 J9 C9 D9 I9 Z9 O9 Y9 B9 K9 H9 W9
So if you are Elite (booking in W for Eco awards) you can have Business awards for all but two flights during this period, and Eco awards on all flights.
I guess it may be a problem with the FB system, did you try to call them directly ?