Welcome! This forum has a treasure trove of great info – Scouters helping Scouters! Just a heads up, though - all content, information, and opinions shared on this forum are those of the author, not the BSA.
I have a Scout that is completing his Eagle through a Ship. I can see his Scouts BSA Advancement but when I go to mark it, it takes me back to the main dashboard with a list of all his units. I am a Skipper so I should be able to mark it.