Merge pull request #4421 from segmentio/prigiattiperrut-patch-3

Added some points to the "FAQ & Troubleshooting" section

Author: stayseesong

src/connections/destinations/catalog/actions-google-analytics-4-web/index.md

@@ -48,3 +48,17 @@ With Google Analytics 4, you must create custom dimensions and metrics within th
 ### Debug Mode
 
 The Google Analytics 4 [debug mode](https://support.google.com/analytics/answer/7201382?hl=en){:target="_blank"} is supported with the Google Analytics 4 Web destination. DebugView displays the events and user properties that Analytics collects from a user in real-time. This can be helpful in troubleshooting your implementation.
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+### Additional (unmapped) events are sent to GA4
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+Google Analytics 4 collects events triggered by basic interactions with your site. For more information, see [Google Analytics 4 Automatically collected events](https://support.google.com/analytics/answer/9234069?hl=en){:target="_blank"}
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+### Data takes a long time to appear in Google's reports
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+Google may take [24-48 hours](https://support.google.com/analytics/answer/9333790){:target="_blank"} to process data sent to Google Analytics. As a result, the Google Analytics user interface may not reflect the most current data. The Google Analytics [Realtime report](https://support.google.com/analytics/answer/9271392){:target="_blank"} displays activity on your site as it happens.
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+
+### Data is not sent to Google
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+Ensure that at least one mapping has been configured and enabled in the destination mappings for an event you want to send to Google Analytics. If no mappings are enabled, the destination does not send events.
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