Hi @keissy0304,
As an alternative - you can use browser’s capabilities to view your app in different screen resolutions.
When you press “Preview” on the top right, the new browser tab/window is opened and you can see your app there. The app will change its appearance based on this window’s size. So you can either change the size of your browser’s window, or use Developer tools to view app in different resolution. In Chrome it will be “View” - > “Developer” → “Developer Tools”, and then enable the responsive view using the icon on a screenshot:
After that you can simulate how your app looks on various devices in various resolutions.
Best,
Victor.