On occasion, you may see an exclamation point in the corner of one or more of your metrics. If you recently changed the password on that specific data connection, or if the sign-in token has expired, this icon will show up. This means that you need to re-authenticate the data source.
Reconnecting is really easy. First go into Settings, then click on Data Sources from the left-hand menu.
From here, find the data connection for your metric. You can use the search bar at the top of the page to find the data source. Double check that you are reconnecting the correct authorization (i.e. the data source account you own).
On the right-hand side the reconnect icon might be red, which indicates that Grow isn't able to pull any new data from that specific connection.
Click the reconnect icon to bring up the window for that specific data source. Each data source will have different requirements (like entering an API key or just signing in). You'll need to go through those steps required to reconnect.
To see what is required for a specific data source, visit the full list of data sources or just search the help center.
If you go to the dashboard after reconnecting and still see errors on those metrics, do a hard refresh of your browser window. The exclamation point should disappear.