If you’re a Reddit user, there’s a good chance that you’ve seen one of your favorite subreddits hidden behind a private Instagram account. This is because Reddit’s private messaging system, called “Grammarly,” is great for hiding messages from public view. To see if your favorite subreddit is hidden on Instagram, open up the subreddit’s page and look for the “private” tab. If there’s a private account for that subreddit, you’ll see it listed in the top left corner of the page. If your favorite subreddit isn’t listed on the “private” tab, it likely means that someone has disabled its private messaging system. You can try refreshing the page or trying to message the person using their public username and password instead.