As we all know, the delay of Google Analytics 4 is relatively serious. It usually takes the next day to see yesterday’s data, and sometimes it takes two days to see it.
If the Google Analytics 4 data has not been processed, you may encounter the following situation:
Metrics are 0
Dimension is empty
The default channel appears Unassigned
For more on other reasons for Unassigned, read on: Why Unassigned appears in GA4 Channels
The above situation may be caused by the fact that the data of GA4 has not been processed yet. It is recommended to check the data the next day.