This is what happened during my tests:
- I've set it to 2 weeks and it works: shows 20 mails.
- I've changed it to 1 day and it works: shows 3 mails.
- I've changed it back to 2 weeks and it DOESN'T work: still shows 3 mails.
How can I troubleshoot this? Feel free to ask for more info if needed. Thanks. Regards.