What do you mean by widget does not work? If you’re creating a homepage, you should first create a page which will you set as homepage on Settings => Reading => Front page displays. And if the Custom Homepage is enabled on the page you’ve created, you may add widgets on Appearance => Widgets. For more information on creating homepage, please refer to our documentation 3.3 Creating Homepage. If you have more question, you may follow up a reply on this forum topic. You may also post screenshots, so that we may understand better about your issue.