Duplicate Backorder emails

I have started receiving duplicate backorder notice emails since July 11, 2025. It seems that v10.0.1 may have been installed on 7/9 or 7/10 and this is where the issue began.

I receive two copies of each backorder notice for any product backordered.

System report below:

System Status Report

### WordPress Environment ###

WordPress address (URL): [Redacted]
Site address (URL): [Redacted]
WC Version: 10.1.2
Legacy REST API Package Version: The Legacy REST API plugin is not installed on this site.
Action Scheduler Version: ✔ 3.9.3
Log Directory Writable: ✔
WP Version: 6.8.2
WP Multisite: –
WP Memory Limit: 768 MB
WP Debug Mode: –
WP Cron: ✔
Language: en_US
External object cache: –

### Server Environment ###

Server Info: Apache
Server Architecture: Linux 6.6.63-MCIclouder663-c9 x86_64
PHP Version: 8.4.12
PHP Post Max Size: 256 MB
PHP Time Limit: 120
PHP Max Input Vars: 3000
cURL Version: 8.9.1
OpenSSL/3.2.4

SUHOSIN Installed: –
MySQL Version: 8.0.43-34
Max Upload Size: 256 MB
Default Timezone is UTC: ✔
fsockopen/cURL: ✔
SoapClient: ✔
DOMDocument: ✔
GZip: ✔
Multibyte String: ✔
Remote Post: ✔
Remote Get: ✔

### Database ###

[REDACTED]

### Post Type Counts ###

acf-field: 25
acf-field-group: 4
attachment: 3501
atum_purchase_order: 1128
atum_supplier: 78
custom_css: 1
elementor_library: 1
es_template: 2
jetpack_migration: 2
jp_img_sitemap: 1
jp_sitemap: 1
jp_sitemap_master: 1
nav_menu_item: 26
oembed_cache: 10
op-set: 3
page: 45
post: 24
product: 705
product_variation: 2461
revision: 511
shipment: 1
shop_coupon: 27
shop_order: 5510
shop_order_refund: 44
sumo_payment_plans: 1
um_directory: 1
um_form: 3
wcs_ruleset: 10
wcsn_notification: 7
wp_global_styles: 1
wpcf7_contact_form: 3

### Security ###

Secure connection (HTTPS): ✔
Hide errors from visitors: ✔

### Active Plugins (51) ###

User Switching in Admin Bar: by wpexpertsio – 1.4
Advanced Custom Fields: by WP Engine – 6.5.1
CAPTCHA 4WP (Premium): by Melapress – 7.6.0
Akismet Anti-spam: Spam Protection: by Automattic - Anti-spam Team – 5.5
ATUM Export PRO: by Stock Management Labs™ – 1.6.8
ATUM Multi-Inventory: by Stock Management Labs™ – 1.9.8
ATUM Inventory Management for WooCommerce: by Stock Management Labs™ – 1.9.50
Booster Plus for WooCommerce: by Pluggabl LLC – 7.3.0
Conditional Fields for Contact Form 7: by Jules Colle – 2.6.3
Code Snippets: by Code Snippets Pro – 3.7.0
Admin Columns: by AdminColumns.com – 4.7.7
Contact Form 7: by Takayuki Miyoshi – 6.1.1
Flexible Shipping: by Octolize – 6.4.0
Site Kit by Google: by Google – 1.161.0
Limit Login Attempts Reloaded: by Limit Login Attempts Reloaded – 2.26.23
We’re Open!: by Noah Hearle
Design Extreme – 2.3

Regenerate Thumbnails: by Alex Mills (Viper007Bond) – 3.1.6
Speed Optimizer: by SiteGround – 7.7.2
Site Health Tool Manager: by William Earnhardt – 1.1
SiteGround Migrator: by SiteGround – 2.0.9
Social Media Auto Publish: by xyzscripts.com – 3.6.4
Super Socializer: by Team Heateor – 7.14.4
UpdraftPlus - Backup/Restore: by TeamUpdraft
DavidAnderson – 2.25.7.26

User Role Editor: by Vladimir Garagulya – 4.64.5
User Switching: by John Blackbourn – 1.10.0
Username Changer: by Widgit Team – 3.2.2
Export and Import Users and Customers: by WebToffee – 2.6.6
WC Serial Numbers Pro: by PluginEver – 1.4.3
WC Serial Numbers: by PluginEver – 2.2.2
Multi-Carrier Shippo Shipping Rates & Address Validation for WooCommerce: by OneTeamSoftware – 1.5.17
WooCommerce Conditional Shipping Pro: by Lauri Karisola / WP Trio – 3.5.0
Woo Donations: by Geek Code Lab – 4.4.3
WPC Product Bundles for WooCommerce (Premium): by WPClever – 8.3.3
WooCommerce.com Update Manager: by Automattic – 1.0.3
Additional Variation Images Gallery for WooCommerce - Pro: by Emran Ahmed – 1.3.28
Additional Variation Images Gallery for WooCommerce: by Emran Ahmed – 1.3.28
WooCommerce UPS Shipping: by WooCommerce – 3.8.9
WooCommerce USPS Shipping: by WooCommerce – 5.2.4
WooCommerce: by Automattic – 10.1.2
Yoast SEO Premium: by Team Yoast – 25.9
Yoast SEO: by Team Yoast – 25.9
WP Mail Logging: by WP Mail Logging Team – 1.15.0
WP Mail SMTP: by WP Mail SMTP – 4.6.0
LightStart - Maintenance Mode, Coming Soon and Landing Page Builder: by Themeisle – 2.6.20
Smart Image Resize PRO: by Nabil Lemsieh – 1.14.0
Smush Pro: by WPMU DEV – 3.21.1
WPC Composite Products for WooCommerce: by WPClever – 7.6.1
WPC Price by Quantity for WooCommerce (Premium): by WPClever – 5.3.3
WPC Product Quantity for WooCommerce (Premium): by WPClever – 5.1.1
WPMU DEV Dashboard: by WPMU DEV – 4.11.29
WooCommerce Zeamster Gateway: by Zeamster – 1.0.1

### Inactive Plugins (27) ###

Advanced Custom Fields: Extended: by ACF Extended – 0.9.1.1
Better Admin Users Search: by Applelo – 1.2.0
Better Search Replace: by WP Engine – 1.4.10
Booster for WooCommerce: by Pluggabl LLC – 7.3.0
CAPTCHA 4WP: by Melapress – 7.6.0
Check & Log Email - Easy Email Testing & Mail logging: by checkemail – 2.0.9
Conditional Shipping for WooCommerce: by Lauri Karisola / WP Trio – 3.5.0
Contact Form 7 - Dynamic Text Extension: by AuRise Creative
SevenSpark – 5.0.3

Custom field finder: by Team Yoast – 0.4
Dynamic Select for Contact Form 7: by John A. Huebner II – 2.0.3
Fortis for WooCommerce: by Fortis Payment Systems – 1.1.2
Google Analytics Dashboard for WP (GADWP): by ExactMetrics – 8.8.0
Heateor Social Comments: by Team Heateor – 1.6.3
Import and export users and customers: by codection – 1.29.5
Opening Hours: by Jannik Portz – 2.3.0
PDF Invoices & Packing Slips for WooCommerce: by WP Overnight – 4.7.0
Photonic Gallery & Lightbox for Flickr, SmugMug & Others: by Sayontan Sinha – 3.21
Regenerate Thumbnails Advanced: by ShortPixel – 2.5.0
Smart Image Resize for WooCommerce: by Nabil Lemsieh – 1.13.0
SUMO Payment Plans: by Fantastic Plugins – 8.0
Visual Composer: by visualcomposer.com – 45.15.0
WooCommerce: Show Empty Categories: by Maje Media LLC – 1.1.5
WooCommerce Blocks: by Automattic – 11.7.0
WooCommerce Tax: by WooCommerce – 3.1.0
WPC Price by Quantity for WooCommerce: by WPClever – 5.3.3
WPC Product Bundles for WooCommerce: by WPClever – 8.3.3
WPC Product Quantity for WooCommerce: by WPClever – 5.1.1

### Settings ###

Legacy API Enabled: –
Force SSL: –
Currency: USD ($)
Currency Position: left
Thousand Separator: ,
Decimal Separator: .
Number of Decimals: 2
Taxonomies: Product Types: composite (composite)
external (external)
grouped (grouped)
simple (simple)
variable (variable)
woosb (woosb)

Taxonomies: Product Visibility: exclude-from-catalog (exclude-from-catalog)
exclude-from-search (exclude-from-search)
featured (featured)
outofstock (outofstock)
rated-1 (rated-1)
rated-2 (rated-2)
rated-3 (rated-3)
rated-4 (rated-4)
rated-5 (rated-5)

Connected to WooCommerce.com: ✔
Enforce Approved Product Download Directories: –
HPOS feature enabled: –
Order datastore: WC_Order_Data_Store_CPT
HPOS data sync enabled: –
Enabled Features: analytics
marketplace
order_attribution
site_visibility_badge
remote_logging
email_improvements
blueprint
point_of_sale


### Logging ###

Enabled: ✔
Handler: Automattic\WooCommerce\Internal\Admin\Logging\LogHandlerFileV2
Retention period: 30 days
Level threshold: –
Log directory size: 3 MB

### WC Pages ###

Shop base: #28 - /shop/
Cart: #29 - /cart/ -  Contains the [woocommerce_cart] shortcode
Checkout: #30 - /checkout/ -  Contains the [woocommerce_checkout] shortcode
My account: #31 - /my-account/ -  Contains the [woocommerce_my_account] shortcode
Terms and conditions: #432 - /terms-and-conditions/

### Theme ###

Name: Storefront
Version: 4.6.1
Author URL: https://woocommerce.com/
Child Theme: ❌ – If you are modifying WooCommerce on a parent theme that you did not build personally we recommend using a child theme. See: How to create a child theme
Theme type: Classic theme
WooCommerce Support: ✔

### Templates ###

Overrides: /wp-content/plugins/atum-multi-inventory/views/email-templates/email-mi-order-items.php version 9.7.1 is out of date. The core version is 9.9.0
/wp-content/plugins/wpc-product-quantity-premium/templates/quantity-input.php version 9.4.0 is out of date. The core version is 10.1.0
/wp-content/plugins/woo-variation-gallery/templates/product-images.php
/wp-content/plugins/woo-variation-gallery/templates/product-thumbnails.php version 9.5.0 is out of date. The core version is 9.8.0

Outdated Templates: ❌


                        Learn how to update                  |




                        Clear system status theme info cache

### Admin ###

Enabled Features: activity-panels
analytics
product-block-editor
coupons
core-profiler
customize-store
customer-effort-score-tracks
import-products-task
experimental-fashion-sample-products
shipping-smart-defaults
shipping-setting-tour
homescreen
marketing
mobile-app-banner
onboarding
onboarding-tasks
pattern-toolkit-full-composability
product-custom-fields
remote-inbox-notifications
remote-free-extensions
payment-gateway-suggestions
printful
shipping-label-banner
subscriptions
store-alerts
transient-notices
woo-mobile-welcome
wc-pay-promotion
wc-pay-welcome-page
launch-your-store
add-to-cart-with-options-stepper-layout

Disabled Features: product-data-views
experimental-blocks
experimental-iapi-mini-cart
experimental-iapi-runtime
coming-soon-newsletter-template
minified-js
product-pre-publish-modal
settings
async-product-editor-category-field
product-editor-template-system
use-wp-horizon
experimental-wc-rest-api

Daily Cron: ✔ Next scheduled: 2025-09-20 05:52:17 -07:00
Options: ✔
Notes: 6
Onboarding: completed

### Action Scheduler ###

Complete: 7,478
Oldest: 2025-08-20 05:19:36 +0000
Newest: 2025-09-20 05:08:52 +0000

Failed: 250
Oldest: 2022-01-11 18:50:05 +0000
Newest: 2025-08-21 17:09:53 +0000

Pending: 23
Oldest: 2025-09-20 05:13:52 +0000
Newest: 2025-10-04 21:25:48 +0000


### Status report information ###

Generated at: 2025-09-19 22:08:57 -07:00