There are several things that you should check to figure out why your emails are not being delivered to a specific folder or label:

1. Check the email routing settings to make sure that the folder or label is properly configured.
2. Make sure that the email in question meets the criteria set to deliver the message to the folder or label.
3. Check the message headers to see what is being used as a filter.
4. Verify that the email address is correct, up-to-date, and active.
5. Check for any anti-spam or malware protective filters that may be blocking the email from being delivered.
6. If none of the above help, contact your email service provider for assistance.