We recommend that you test your include and exclude patterns using this tester: https://www.regextester.com/

Ensure that you test the entire test string. For example:

This file would not be picked up because the regex only matches the ending string and not the entire file name; only .txt would be highlighted as a match. If you try .*txt$ as the regex, the entire file name will be highlighted, and that file will be picked up by the File Folder Listener Service.