Stock History Troubleshooting: Missing Snapshots, Slow Reports and Emails

If Stock History & Reports Manager for WooCommerce shows no data, misses scheduled snapshots, loads slowly or sends duplicate emails, the cause is usually stock settings, WP-Cron, catalog size or old scheduled actions. Check your settings at WPFactory > Stock Snapshot (also reachable at WooCommerce > Settings > Stock Snapshot) and work through these fixes.

A product shows “No data yet.” or no values #

Cause: no snapshot exists, or the product does not track a stock quantity.

1. Edit the product and open Product data > Inventory. Enable Manage stock? and set a quantity. Products without it have no quantity to record.
2. For variable products, stock may be managed per variation. Make sure Include variations is on under General > Variable Product Options.
3. Go to Tools, tick Take snapshot and save to record every product now.

Scheduled snapshots are not running #

Cause: periodic snapshots use Action Scheduler, which depends on WP-Cron.

1. On the General section, confirm Periodic snapshots is ticked.
2. Read the Periodic Snapshots Options heading. If it says “Crons are disabled on your site!”, your wp-config.php sets DISABLE_WP_CRON to true. Set it to false, or add a server cron job that runs WP-Cron.
3. Go to WooCommerce > Status > Scheduled Actions, search for alg_wc_stock_snapshot_action, and check for failed or overdue actions. You can run a pending one by hand from there.
4. On low-traffic sites, WP-Cron only runs when someone visits. Use a server cron job with Allow snapshots via URL, as described in How to Schedule Automatic WooCommerce Stock Snapshots.

Stock changes from an import or bulk tool are missing #

Cause: product update snapshots are recorded when WooCommerce saves a product. Tools that write stock straight to the database without saving the product skip that step.

1. Confirm Product update snapshots is ticked on the General section.
2. After a bulk import, run Tools > Take snapshot to record the new levels.
3. Keep Periodic snapshots on so any missed change is picked up at the next scheduled run.

The Report or History page is slow or times out #

Cause: both pages read the snapshots of every product. Large catalogs and long histories take time to process.

1. Go to General > Advanced Options, tick Prepare reports in background and save. The Report is then built by Action Scheduler and the page reloads when it is ready.
2. Use shorter date ranges and the category filters.
3. If your periodic interval is very short, raise it. Each periodic snapshot adds a record for every product, which grows the data the reports must read.
4. If old history is no longer needed, export what you want to keep, then run Tools > Delete all snapshots. This removes every snapshot and cannot be undone.

Reports or the restocked shortcode show stale results #

Cause: results are cached until the next snapshot or settings save.

1. Go to Tools, tick Clear plugin transients and save. Saving any settings section also clears these caches.
2. For the shortcode page, also clear your page cache.

The user filter in the Report shows nothing #

Cause: user IDs are only stored when Extra data is on. Snapshots taken while it was off have no user.

1. On the General section, tick Extra data and save.
2. New snapshots will include the user. Older snapshots cannot be filtered by user.

Duplicate daily report emails (Pro) #

Cause: changing a line in Email data schedules a new recurring email, but the action for the old line stays scheduled.

1. Go to WooCommerce > Status > Scheduled Actions.
2. Search for alg_wc_stock_snapshot_report_email_action.
3. Cancel the pending actions whose arguments match lines you removed or changed.

Emails do not arrive (Pro) #

Cause: email delivery, disabled switches or a malformed line.

1. Check that the Emails or Daily report emails checkbox is ticked. In the free version they are disabled.
2. Make sure each Email data line has exactly five parts separated by |. Other lines are skipped.
3. Look in WooCommerce > Status > Logs for the source stock-snapshot-for-woocommerce to see which emails were scheduled.
4. Remember that snapshot emails are sent only after full snapshots (periodic, manual or URL), not after single-product updates.
5. Test your site’s email delivery. An SMTP plugin fixes most delivery problems.

Dates or times look wrong #

Cause: snapshots are stored in UTC and shown in your site time zone.

1. Check Settings > General > Timezone.
2. The footer of the Report and History pages shows the range and your local time, so you can confirm the time zone in use.

Still stuck? Our team answers every ticket on the Stock History support forum.