Your app simulator allows you or others to preview your app. An app simulator appears directly in your App Editor to allow you to preview the changes you make. An app simulator is also included in your promotional landing page to allow other to try out your app.
If your feature icons or content don't appear in your app simulator, it could be because your ad blocker is blocking it. If this occurs on your promotional landing page, you will see this message: Failed to initialize network connection.
To display icons and content, turn off your ad blocker.