You can try and fetch an earlier post manually and see if that works.

Here is the official documentation: https://join-lemmy.org/docs/administration/federation_getting_started.html#fetching-communities

Your instance won’t start fetching any posts from a community, until someone from your instance subscribes to it. Then it will fetch the last 25 posts (I think) and then all future posts.

We need much better moderation tools. List of uploaded content, list of cached content, option to purge cached content.

No, it didn’t. Lemmy.ml is running just fine.

What do you mean it disappeared from your list?

It’s correct they don’t federate with anyone else directly, but it is possible for another instance to follow channels on tilvids and have them show up as viewable content on the other instance.

PeerTube uses P2P to share video data and PeerTube instances can mirror each others videos so they appear as a peer on the video.

Threads have even recently said that ActivityPub is a long way away from being implemented.

https://the-federation.info

Remote transcoding is huge news!