> ## Documentation Index
> Fetch the complete documentation index at: https://docs.upstackdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Troubleshooting guides

> Every Upstack Data troubleshooting guide in one place — pixel setup, missing events, destination errors, attribution mismatches, duplicate events, and data sync issues.

Find the guide for what you're seeing. Each one walks through the cause and the fix. If none of them matches, [contact support](/troubleshooting/support).

### Pixel setup & diagnostics

* [How to troubleshoot your Upstack Data pixel](/troubleshooting/troubleshoot-pixel-issues)
* [Verify your Upstack Data Shopify pixel is working](/troubleshooting/verify-your-shopify-pixel)
* [Complete setup guide for Shopify brands](/troubleshooting/complete-shopify-setup-guide)
* [Fix the 'Not paired with product catalog' error](/troubleshooting/not-paired-with-product-catalog-error)
* [What is causing duplicate pixel events in my Shopify store?](/troubleshooting/duplicate-pixel-events)

### No events in dashboard

* [No events have ever appeared in the dashboard](/troubleshooting/no-events-appear-in-dashboard)
* [Events were flowing but suddenly stopped](/troubleshooting/events-suddenly-stopped)
* [Events appear intermittently or only on certain pages](/troubleshooting/events-intermittent-or-missing-on-some-pages)
* [Events are delayed by several minutes](/troubleshooting/events-delayed-in-dashboard)
* [Dashboard shows a different store or stays at zero despite correct setup](/troubleshooting/wrong-store-or-zero-events-in-dashboard)
* [Events appear in an incognito window but not your browser](/troubleshooting/events-appear-in-incognito-but-not-your-browser)

### Events missing at destination

* [Destination shows 'Disconnected' or 'Not Connected'](/troubleshooting/destination-shows-disconnected)
* [Destination was working but stopped with an 'Auth Error' or 'Token Expired'](/troubleshooting/destination-token-expired-or-auth-error)
* [Events are delivered but the destination reports 0 conversions or a low match rate](/troubleshooting/destination-zero-conversions-or-low-match-rate)
* [Some events are delivered, but the event count is much lower than expected](/troubleshooting/destination-event-count-lower-than-expected)
* [EMQ (Event Match Quality) score is low or declining](/troubleshooting/low-emq-score-at-destination)
* [Why is my Facebook Advanced Matching score low?](/troubleshooting/low-facebook-advanced-matching-score)

### Attribution mismatch

* [Upstack shows more (or fewer) conversions than Meta Ads Manager](/troubleshooting/upstack-meta-conversions-dont-match)
* [Revenue in Upstack doesn't match Shopify order totals](/troubleshooting/upstack-revenue-doesnt-match-shopify)
* [Conversions are attributed to the wrong day](/troubleshooting/conversions-attributed-to-wrong-day)
* [Upstack shows higher event counts than the destination](/troubleshooting/event-counts-higher-than-destination)
* [Missing sales in Facebook reports](/troubleshooting/missing-sales-in-facebook-reports)
* [Facebook reports more sales than Shopify](/troubleshooting/facebook-reports-more-sales-than-shopify)
* [Why turn off Facebook and Instagram data sharing?](/troubleshooting/why-disable-facebook-instagram-data-sharing)

### Duplicate events

* [The same purchase event appears twice with identical order details](/troubleshooting/duplicate-purchase-events)
* [PageView or AddToCart events are doubled on certain pages](/troubleshooting/duplicate-pageview-or-addtocart-events)

### Data stopped syncing

* [Shopify order and customer data is stale or missing recent orders](/troubleshooting/shopify-data-stale-or-missing)
* [Ad spend data from Meta or Google Ads is not updating](/troubleshooting/ad-spend-data-not-updating)
* [Webhook events from Shopify have stopped](/troubleshooting/shopify-webhooks-stopped)
* [Source shows 'Connected' but no new data is flowing](/troubleshooting/source-connected-but-no-data-flowing)

### Tracking FAQ

* [How does Upstack Data track conversion events?](/troubleshooting/how-conversion-events-are-tracked)
* [Can I get TikTok attribution in Upstack Data?](/troubleshooting/can-i-get-tiktok-attribution)
* [Using UTM tags in dynamic product ads](/troubleshooting/utm-tags-in-dpa-ads)
* [How to connect marketing channels](/troubleshooting/connect-marketing-channels)
* [My data isn't showing correctly](/troubleshooting/data-not-showing-correctly)
* [I can't see my ads account in Upstack Data](/troubleshooting/ads-account-missing)

### Account & billing FAQ

* [How do I cancel my subscription?](/troubleshooting/cancel-subscription)
* [Using Upstack Data on multiple stores](/troubleshooting/multiple-stores-and-pricing)

### More troubleshooting

* [Integration connection errors and disconnections](/troubleshooting/integration-connection-errors-and-disconnections)
* [Troubleshooting: Pixel stuck on "Waiting for first events"](/troubleshooting/pixel-stuck-on-waiting-for-first-events)
* ["Server Sending Modified FBC Value" in Events Manager](/troubleshooting/server-sending-modified-fbc-value-in-events-manager)
* ["Low Rate of Pixel Events Covered by Conversions API" in Meta Events Manager](/destinations/catalog/meta-capi/low-rate-of-pixel-events-covered-by-conversions-api-in-meta-events-manager)
* [Why is my Meta EMQ Panel Showing Zeros (0.0/10)?](/destinations/catalog/meta-capi/why-is-my-meta-emq-panel-showing-zeros-0-0-10)
* [Frequently Asked Questions](/troubleshooting/faq)
* [Support](/troubleshooting/support)


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.