wi11

We think we might have found the issue that was causing this problem for us. it had to do with the Varnish cache used by WPEngine and the MailChimp plugin. The MailChimp plugin was using the WooCommerce session to store tracking information when a product page was viewed and Varnish was caching the WooCommerce cookie and sending it back to other visitors. Disabling the MailChimp plugin fixed it for us.

We think we might have found the issue that was causing this problem for us. it had to do with the Varnish cache used by WPEngine and the MailChimp plugin. MailChimp was using the WooCommerce session to store tracking information when a product page was viewed and Varnish was caching the cookie and sending it back to other visitors. Disabling the MailChimp plugin fixed it for us.

Thanks Margaret for the reply, we will look into these and do some testing

Thanks for the reply, we have been talking with WPEngine, will try to get to a senior support person.

Hi, thank you for the reply. We were thinking cache, but changing cart contents on one phone would change the cart contents on another phone when reloading the page on the mobile. The phones have different ip addresses and on different mobile networks. Other devices seem ok.

Below is the output of the status report, thanks for any help you can give

### WordPress Environment ###

WC Version: 6.4.1
REST API Version: ? 6.4.1
WC Blocks Version: ? 7.2.2
Action Scheduler Version: ? 3.4.0
WC Admin Version: ? 3.3.2
Log Directory Writable: ?
WP Version: ? 5.9.3 - There is a newer version of WordPress available (6.0)
WP Multisite: –
WP Memory Limit: 512 MB
WP Debug Mode: –
WP Cron: –
Language: en_US
External object cache: ?

### Server Environment ###

Server Info: nginx
PHP Version: 8.0.19
PHP Post Max Size: 100 MB
PHP Time Limit: 60
PHP Max Input Vars: 10000
cURL Version: 7.58.0
OpenSSL/1.1.1

SUHOSIN Installed: –
MySQL Version: 5.7.37-40-log
Max Upload Size: 50 MB
Default Timezone is UTC: ?
fsockopen/cURL: ?
SoapClient: ?
DOMDocument: ?
GZip: ?
Multibyte String: ?
Remote Post: ?
Remote Get: ?

### Database ###

WC Database Version: 6.4.0
WC Database Prefix: wp_
Total Database Size: 83.34MB
Database Data Size: 49.40MB
Database Index Size: 33.94MB
wp_woocommerce_sessions: Data: 1.02MB + Index: 0.02MB + Engine InnoDB
wp_woocommerce_api_keys: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_woocommerce_attribute_taxonomies: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_woocommerce_downloadable_product_permissions: Data: 0.02MB + Index: 0.06MB + Engine InnoDB
wp_woocommerce_order_items: Data: 0.16MB + Index: 0.08MB + Engine InnoDB
wp_woocommerce_order_itemmeta: Data: 1.52MB + Index: 2.98MB + Engine InnoDB
wp_woocommerce_tax_rates: Data: 0.02MB + Index: 0.06MB + Engine InnoDB
wp_woocommerce_tax_rate_locations: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_woocommerce_shipping_zones: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_woocommerce_shipping_zone_locations: Data: 0.17MB + Index: 0.19MB + Engine InnoDB
wp_woocommerce_shipping_zone_methods: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_woocommerce_payment_tokens: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_woocommerce_payment_tokenmeta: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_woocommerce_log: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_actionscheduler_actions: Data: 16.06MB + Index: 15.14MB + Engine InnoDB
wp_actionscheduler_claims: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_actionscheduler_groups: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_actionscheduler_logs: Data: 8.02MB + Index: 6.03MB + Engine InnoDB
wp_cartflows_ca_cart_abandonment: Data: 0.36MB + Index: 0.02MB + Engine InnoDB
wp_cartflows_ca_email_history: Data: 0.05MB + Index: 0.03MB + Engine InnoDB
wp_cartflows_ca_email_templates: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_cartflows_ca_email_templates_meta: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_commentmeta: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_comments: Data: 1.52MB + Index: 0.94MB + Engine InnoDB
wp_gf_draft_submissions: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_gf_entry: Data: 0.06MB + Index: 0.03MB + Engine InnoDB
wp_gf_entry_meta: Data: 0.09MB + Index: 0.08MB + Engine InnoDB
wp_gf_entry_notes: Data: 0.05MB + Index: 0.03MB + Engine InnoDB
wp_gf_form: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_gf_form_meta: Data: 0.03MB + Index: 0.00MB + Engine InnoDB
wp_gf_form_revisions: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_gf_form_view: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_gf_rest_api_keys: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_links: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_mailchimp_carts: Data: 0.16MB + Index: 0.00MB + Engine InnoDB
wp_mailchimp_jobs: Data: 1.52MB + Index: 0.00MB + Engine InnoDB
wp_options: Data: 2.50MB + Index: 0.06MB + Engine InnoDB
wp_pimwick_gift_card: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_pimwick_gift_card_activity: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_postmeta: Data: 6.52MB + Index: 5.91MB + Engine InnoDB
wp_posts: Data: 2.11MB + Index: 0.28MB + Engine InnoDB
wp_redirection_404: Data: 0.11MB + Index: 0.05MB + Engine InnoDB
wp_redirection_groups: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_redirection_items: Data: 0.02MB + Index: 0.09MB + Engine InnoDB
wp_redirection_logs: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_smush_dir_images: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_termmeta: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_terms: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_term_relationships: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_term_taxonomy: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_usermeta: Data: 0.13MB + Index: 0.03MB + Engine InnoDB
wp_users: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_wc_admin_notes: Data: 0.06MB + Index: 0.00MB + Engine InnoDB
wp_wc_admin_note_actions: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_wc_category_lookup: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_wc_customer_lookup: Data: 0.09MB + Index: 0.06MB + Engine InnoDB
wp_wc_download_log: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_wc_gpf_render_cache: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_wc_order_coupon_lookup: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_wc_order_product_lookup: Data: 0.11MB + Index: 0.06MB + Engine InnoDB
wp_wc_order_stats: Data: 0.11MB + Index: 0.08MB + Engine InnoDB
wp_wc_order_tax_lookup: Data: 0.08MB + Index: 0.06MB + Engine InnoDB
wp_wc_product_attributes_lookup: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_wc_product_meta_lookup: Data: 0.02MB + Index: 0.09MB + Engine InnoDB
wp_wc_rate_limits: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_wc_reserved_stock: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_wc_tax_rate_classes: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_wc_webhooks: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_woocommerce_gpf_google_taxonomy: Data: 2.02MB + Index: 0.00MB + Engine InnoDB
wp_woo_shippment_provider: Data: 0.08MB + Index: 0.00MB + Engine InnoDB
wp_wpmailsmtp_debug_events: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_wpmailsmtp_emails_log: Data: 3.52MB + Index: 0.33MB + Engine InnoDB
wp_wpmailsmtp_tasks_meta: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_yoast_indexable: Data: 0.19MB + Index: 0.13MB + Engine InnoDB
wp_yoast_indexable_hierarchy: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_yoast_migrations: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_yoast_primary_term: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_yoast_seo_links: Data: 0.02MB + Index: 0.03MB + Engine InnoDB

### Post Type Counts ###

attachment: 194
bn_news: 4
customize_changeset: 4
nav_menu_item: 10
page: 15
popup: 1
popup_theme: 8
post: 1
product: 26
product_variation: 40
revision: 11
shop_coupon: 17
shop_order: 781
shop_order_refund: 2
wp_global_styles: 1

### Security ###

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

### Active Plugins (24) ###

Gravity Forms: by Gravity Forms – 2.6.3
AddressFinder: by AddressFinder – 1.4.9
Advanced Shipment Tracking Pro: by zorem – 1.4
Age Gate: by Phil Baker – 2.20.2
WP Engine Smart Plugin Manager: by WP Engine – 5.10.29
Blocks Animation: CSS Animations for Gutenberg Blocks: by ThemeIsle – 2.0.2
Google Tag Manager for WordPress: by Thomas Geiger – 1.15
Facebook for WooCommerce: by Facebook – 2.6.13
Free Gifts for WooCommerce: by FantasticPlugins – 7.2
WooCommerce Google Product Feed: by Ademti Software Ltd. – 10.2.1
Mailchimp for WooCommerce: by Mailchimp – 2.6.2
Popup Maker: by Popup Maker – 1.16.7
Redirection: by John Godley – 5.2.3
Product Customer List for WooCommerce: by Kokomo – 3.0.8
WooCommerce Cart Abandonment Recovery: by CartFlows Inc – 1.2.15
Advanced Order Export For WooCommerce: by AlgolPlus – 3.2.2
WooCommerce Stripe Gateway: by WooCommerce – 6.3.0
WooCommerce Google Analytics Integration: by WooCommerce – 1.5.9
WooCommerce: by Automattic – 6.4.1 (update to version 6.5.1 is available)
Yoast SEO: by Team Yoast – 18.7
WP Mail SMTP Pro: by WPForms – 3.1.0
REST API Log: by Pete Nelson – 1.6.8
Smush Pro: by WPMU DEV – 3.9.11
WPMU DEV Dashboard: by WPMU DEV – 4.11.13

### Inactive Plugins (4) ###

Akismet Anti-Spam: by Automattic – 4.2.3
Jetpack: by Automattic – 10.9
MWB HubSpot for WooCommerce: by MakeWebBetter – 1.3.0
PW WooCommerce Gift Cards Pro: by Pimwick
LLC – 1.337

### Dropin Plugins (2) ###

advanced-cache.php: advanced-cache.php
object-cache.php: Memcached Redux

### Must Use Plugins (7) ###

Force Strong Passwords - WPE Edition: by Jason Cosper – 1.8.0
MU Plugin Loader: by Junaid Bhura – 1.0
WPE ElasticPress Autosuggest Logger: by WP Engine – 1.0.0
WP Engine Cache Plugin: by WP Engine – 1.0.9
WP Engine Seamless Login Plugin: by WP Engine – 1.5.5
WP Engine Security Auditor: by wpengine – 1.0.10
WP Engine System: by WP Engine – 5.0.1

### Settings ###

API Enabled: –
Force SSL: –
Currency: AUD ($)
Currency Position: left
Thousand Separator: ,
Decimal Separator: .
Number of Decimals: 2
Taxonomies: Product Types: external (external)
grouped (grouped)
pw gift card (pw-gift-card)
simple (simple)
variable (variable)

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: –

### WC Pages ###

Shop base: #14 - /shop/
Cart: #15 - /cart/
Checkout: #16 - /checkout/
My account: #17 - /my-account/
Terms and conditions: ? Page not set

### Theme ###

Version: 1.0.0
Author URL: 
Child Theme: ?
Parent Theme Name: 
Parent Theme Version: 1.0.13
Parent Theme Author URL:
WooCommerce Support: ? Not declared

### Templates ###

### WooCommerce Google Product Feed feeds ###

2962b98e6397dcec: Google merchant centre product feed
??Type: google
??Category filter: -
??Categories: -

### WooCommerce Google Product Feed options ###

Include variations in feed: Enabled
Send "item group ID": Enabled
Expanded schema markup: -
Debug key: 17a729e9-c616-4d3a-b786-23fc6eab32c5

### WooCommerce Google Product Feed fields ###

Title: Pre-populates from product product_title.
Availability (in stock products): Defaults to "in stock".
Availability (backordered products): Defaults to "in stock".
Availability (out of stock products): Defaults to "out of stock".
Brand: 
Manufacturer Part Number (MPN): 
Product Type: 
Google Product Category: 
Size system: 

### Action Scheduler ###

Canceled: 1
Oldest: 2022-05-10 19:33:17 +1000
Newest: 2022-05-10 19:33:17 +1000

Complete: 30,577
Oldest: 2022-05-09 09:52:56 +1000
Newest: 2022-06-07 17:06:07 +1000

Pending: 5
Oldest: 2022-06-07 17:09:07 +1000
Newest: 2022-06-13 13:15:12 +1000

### Status report information ###

Generated at: 2022-06-07 17:08:25 +10:00

• This reply was modified 2 years, 5 months ago by Yui.
• This reply was modified 2 years, 5 months ago by Yui. Reason: formatting

Hi @mrbens ,

Did you have any success in resolving this problem? We have also had website customers reporting this issue and we’re also using WPEngine. WPEngine have excluded cart/checkout urls from being cached, but it has happened again since. We haven’t been able to replicate it.

Are you using a cart abandonment plugin? One possibility we’re thinking of is the checkout page is getting cached after a customer has used a cart abandonment link.