So I've been having some problems figuring out 'why' I still can't fly in 'The Sea Of Clouds'. I've gotten all the field aether sites and completely all the quest according to my journal but on my aether log in game I'm still missing a quest. The little yellow icon that marks what you still need and one of those is still red. Any advice would be great.

Flying the Nest 'Complete'
Sleepless in Ok' Zundu 'Complete'
Honoring the Past 'Complete'
Clipped Wings 'Complete'
Bolt, Chain, and Island ' Complete'

I'm clearly missing something but I can't figure out what. Please help.