Here are some suggested steps to address the issue:

1. Check numbering settings under the Home tab in Word
2. Ensure paragraph numbering is enabled
3. Select either the hierarchical or multi-level numbering option
4. Verify that the document has been set to use proper list level numbers
5. Check the outline level of the list is using the appropriate number format
6. Look for any manual edits that may have been done to the list's numbering

If none of these steps address the issue, try resetting the numbering style or reformatting the document.