Since lemmy.one blocks lemmygrad, we aren’t able to see any comments from those users, even if they post in unblocked instances like lemmy.ml? If that’s true then I’m not sure I really like that…
But it seems like my problem is different since the comments I can’t see are from beehaw.org users, which lemmy.one doesn’t block. Perhaps it’s just having trouble fetching older comments, since newer posts and comments seem to load correctly.
Under the communities tab, you should be able to click “All” to browse communities from other instances. Some communities might not show up if no one from lemmy.one has joined them yet