ePub files should directly download to your downloads folder, or where you have all your other downloads programmed to save to. If you're using Chrome you can use CTRL or CMD + J to view your download history, and this will also give you the opportunity to 'show in folder' to see where it's being saved.
If you’ve searched your computer and can’t find your ePub download, you may have a popup blocker preventing the download. In most browsers, you’ll see a small notification in the right of your browser bar if it blocks a popup.
Be sure to check the pop-up settings for your browser to ensure that pop-ups are allowed from app.atticus.io.
We hope that helps!