Your project is not indexed. That is all there is to it.
From what I understand about the process, new published and some updated projects go through an automated black box that says one of three things.
1. index
2. no index and manual review needed
3. no index
If you land in 2, either by random or things like payment issues or certain activities that might trigger manual review, there is a waiting time, that can be anything between hours and several weeks. And after manual review you could also have been sorted into 3 intentional, as is described here. I do not know if projects can land in 3 automatically, but I suspect it could happen, or at least, staff can "overlook" your project. Whatever that means. At least that is what the nice mod always says. If that were the real thing that happened, that would mean, that their internal task system is unreliable. But the mod is not staff, and it probably is just a phrase.