Problem: Product not found when searching in invoice editor product lookup Check product is Published (not Draft or Scheduled) Verify product title contains search term (search is title-based) Check product type filtering - if Pro connector missing, search may be limited Check user permissions - must have ability to read products Try searching by exact product name without special characters Problem: Digital product file upload fails when saving product Verify Agency Pulse Portal API client is configured in Portal settings (Pro only) Check file exists and is readable in WordPress media library Check file size - Portal server may have upload limits Verify network connectivity between WordPress and Portal server Check WordPress error logs for upload response codes and messages If error 500