To enable the Ads Preview feature, follow these steps:
Navigate to the Report Builder.
Drag and drop a Table widget onto your report.
Select the data source "Ads".
Add Ad ID and Ad Name as dimensions.
Filter on META.
Enable tab by dimensions with "channels".
Enable "show ads preview".
In the table, go to META tab and select grid view.
Note: Ads preview is only available for supported data sources (e.g., Meta).