On some communities from other instances latest posts are 2months old? I was on gonewild@lemmynsfw and from dbzer0 instance i can see that there are tons of new posts but when visiting it from kerala.party newest posts are atleast 2 months old
I dont know if I understood the problem completely, but as far as I understood how lemmy works, federation with other communities on remote instances only starts after someone from this instance subscribes to that community [email protected] . Also note that federation works with POST, i.e. the remote instances are responsible for sending their new posts to this instance This means that when you subscribe to a new community, older posts/comments will not be synced, only newer ones.
I see what you mean now, not sure if it has anything to do with the allow NFSW setting in the admin settings, I turned it off some time ago to not allow NSFW content on local communities on this instance, it might also have disabled syncing remote NSFW communities. I have now turned it back on. Let me know if new posts are syncing.