If the data you see in Geckoboard doesn't match what you see in Google Analytics 4, first check that the timezone you've set on your dashboard matches the timezone of your GA4 property.
If you see a Google Analytics 4 widget showing
0 or a much lower number than expected, one possible reason for this is that the data endpoint Geckoboard hooks into has a delay applied to it. You may see a delay between 4-8 hours, but for the more larger GA4 accounts these delays can be 24+ hours.
This is how GA4's API works and so, unfortunately, is beyond our control. For more information, see this analytics help article on data freshness.