Hi @jpzhang
Thanks for reaching out and double-thanks for encouraging folks to try odrive!
Question #1: odrive is limited to the access that Facebook provides. This is especially important when you are requesting photos that you do not own, but are tagged in. You can read more about this here:
Question #2: odrive does not yet support syncing Facebook Pages, but it is a requested feature:
https://forum.odrive.com/t/sync-facebook-pages/718
Question #3: We definitely plan to develop a mobile app. It’s just a matter of resources and priority:
Thanks!