Looker Studio reports must be configured in one of two ways:
To use the viewer's credentials, in which case every viewer will need their own SyncWith account, and will only see the accounts to which they have access
To use the owner's credentials, in which case every viewer will see whatever data the author can see
In most cases, you want to use owner's credentials to ensure that people you share the report with will see the same thing as you.
If you are using SyncWith for Looker Studio and face the following error message when sharing your report with other users:
Authorization Needed - A connector requires your authorization in order for Looker Studio to show this component
You might need to fix the Data Credentials setting as described below:
Edit your report
Click the Resource menu
Click Manage added data sources
Find the data source and click its Edit
A new window will open that has a header with a "Data Credentials" section - click Data Credentials
A dialog will open, make sure that "Owner's Credentials" is selected, not "Viewer's Credentials"
You can learn more about this here: https://support.google.com/looker-studio/answer/6371135?hl=en#zippy=%2Cin-this-article