You open up the Chrome extension on a blank Google page, but it automatically redirects you to https://www.getcloudapp.com/chrome-welcome.
Unfortunately, this is a limit of the Chrome extension. When using Google pages (Google.com, a Google home page, etc), you are unable to open Chrome extensions.
This should not occur on non-Google pages. When it's not a real webpage (like the new tab dialog, or settings, or etc.) we cannot screenshot the open page containing an empty URL to include the CloudApp extension.
If you need further assistance or have additional questions, we’d be happy to help! Please contact our support team at email@example.com.