You could be missing messages sitting in your ‘secret’ Facebook Inbox. Well, it’s not really a secret, but you may not know about it. Here’s how to check. Choose the Messenger icon to open Messages.
Next to Inbox in light gray lettering, you’ll see a tab for Other. Select that tab.
There you’ll see messages you might have missed. Some will be junk, but others could be from people you know or groups you belong to.
Check it out.