The !adventofcode@lemmy.world community is currently without an active mod: the original creator does not seem to have been active on Lemmy in months. I PM’d them to check whether they were still interested in the community and have received no reply.
I’m presently more or less the only active poster there, though that may change next month when this year’s Advent of Code kicks off.
Ah, I actually knew that but didn’t think of it when I was comparing them.
Thanks for the offer, I’ll catch up with you once I see what happens with this request.