One concrete thing that might help your ticket. I checked your Yuna page while logged out and its HTML has a robots tag set to noindex. I also checked eight pages that are missing from search right now, most from threads on this board, and only three have that tag. The other five are just waiting without it.
Since your page was visible first and then dropped out, that tag is worth quoting to support word for word, along with the fact that "Unlisted in search and browse" is off, if it is. It's a specific state they can look up instead of a general "not indexed".