how to get new IJ Inbox messages to appear
Sometimes the inbox will say "You have 1 new message" (or however many), but no new message is seen. OHNOES!
If you delete a message from your inbox, then click Refresh, the new messages will appear. I'm not sure if this works when deleting a message from any page of your inbox (if you have more than one page of notifications), but deleting one from Page 1 has always worked for me.