2 messages unread won't go away?

My “Smart” Unread folder continually shows 2 messages that won’t seem to go away. I’ve checked every folder, marked all as unread, and it still shows… any ideas??

Hello Mark,
are there perhaps any messages in your local folders?
Have you tried to mark the messages as unread directly from the ‘Unread’ folder?
What version of eM Client are you currently running? Check Menu>Help>About section for full number.

Regards,
Olivia