Did you actually have any spam in there? itΓÇÖs possible that if you have no spam in there, the section wonΓÇÖt show until you have some spam. ItΓÇÖs also a possible new change as I just got a notification earlier last week that comments in those sections are removed after 60 days and I have some from 3 years ago (ΓÇÿmy strategy being if it stays hidden no one sees it, but if you delete it, the commentor will know and might try to call you out on it or troll you, so I usually leave them hidden)
so my guess is that you have nothing in that section anyway and possibly it will only show if thereΓÇÖs spam, otherwise it might be one of many visibility bugs floating around youtube. Keeping in mind thereΓÇÖs a big bug in thier captioning right now with the newest update to YouTube.
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