Edited: this post to be the Lemmy.World federation issue post.
We are now ready to upgrade to postgres 16. When this post is 30 mins old the maintenace will start
Updated & Pinned a Comment in this thread explaining my complete investigation and ideas on how the Lemmy app will & could move forward.
To investigate we need the links to the posts or communities that are apparently syncing behind. From LemmyToday and Reddthat.
Also if you create a new community on LemmyToday then it won't automatically appear under /all unless you tell remote servers about it.
You need at least 1 user on Reddthat to subscribe to the community for it to start syncing. Once that is done it will sync. And as with the links Blaze & I have shown, you can see that as far as the currently known communities, we are all up-to-date.
A good example of what we need to investigate is : https://reddthat.com/post/14961735