Ahh, I see what might be the issue.
If you select your star, click the replicator app and just hit import, you get nothing.
But if you move any of the sliders, it should give you a preview within the app and then when you click Import, it should place them into your 2D drawing and close the app. I don't think the app creates any SVG content until you move any of the controls.
If that doesn't work, please post a comment with operating system, browser and browser version.