A couple more things. The Desktop Web Viewer shows only published content, not preflight content. To view your content in web viewer, you need to publish it. See Publishing content for AEM Mobile apps.
To view the migrated content on a device, click the preflight icon in the upper right corner, and then download and sign in to the AEM Preflight app. Tap your project name, and you should see your content.
The migration in this case is not sufficient, you also need to include the collection (migrated folio) into your Home collection. Have you done that already? What exactly do you see when you click the URL?