I have also had my dev logs appear in their correct category, and then later disappear. It makes no sense and there is no transparency. I don't even know if it's working properly.
I was very happy with the result of publishing devlogs, they multiplied my visits by 10, but this last time it's as if I hadn't published anything. Maybe there is some flaw in the algorithm that controls that.
I hope they solve it or at least report the malfunction.