My upload failed, or shows 0 rows

• File over the size limit (150MB for CSV, 25MB for Excel) — save an Excel file as CSV, or split the export by date range and upload it in batches.
• Not a .csv, .xlsx, or .xls file — other formats aren't supported. Excel files only read their first worksheet.
• Empty file, or a file with headers but no data rows.
• Scoring stopped part-way (rare) — scoring carries on from our servers, so closing the tab is fine, and your progress is always saved. If an upload still looks stuck after a few minutes, open Historical data and choose Continue scoring on it.
• Required columns not mapped — every upload needs at least a lead email and a conversion time mapped before you can confirm it.

If none of these match what you're seeing, contact us with the upload's approximate time and we'll take a look.