User blog comment:Swapper1/If the admin is inactive for so long after the wiki was created, the wiki closed/@comment-44807868-20200430050024

Are you trying to ask if a wiki can get automatically closed if its administrators don't edit on the wiki in question for too long? I'm not well-aware with the criteria, but as far as I know, it doesn't really depend on the administrators' activity alone, but on any contributors' activity and perhaps also pageviews. To get a specific and reliable answer about this, though, you may and ask them.

On a side note: there's BTS Wiki which covers BT21 and is stably active; although it's fairly lacking in covering BT21 contents in my opinion, since it doesn't even have the main characters' pages... I've been thinking about bringing it up with the administrators, since I think BT21 characters are a fairly prominent part of BTS's career and hence can understandably have articles for them. So perhaps you may think about expanding the BT21 information there instead? :)