Problem when creating Category

[rapidphim]

Hello,

I am running into a bit problem when creating sub-forum.

Level 1: Parent Forum: Entertainment (Act as Forum: No, Forum is Open: No)
Level 2: Child Forum: Love Counseling (Act as Forum: No, Forum is Open: No)
Level 2a: Sub-Child Forum: Serious Love Issue: (Act as Forum: Yes, Forum is Open: Yes)
Level 2b: Sub-Child Forum: Love Talk: (Act as Forum: Yes, Forum is Open: Yes)

Image 1 is admincp set up. Image 2 is the actual problem. Any ideas or suggestions are greatly appreciated!