#Mastodon admin troubleshooting tip: If you're following people but haven't received toots from them in a while, it might indicate an issue with PuSH subscriptions. It might help to re-subscribe to everybody regardless of expiration time:

From console:

Account.remote.with_followers.pluck(:id).each { |id| Pubsubhubbub::SubscribeWorker.perform_async(id) }

Reference: This conversation https://mastodon.gargantia.fr/users/jelora/updates/50