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Are you sure that your paid advertising is running and that you're sending traffic to a functional website? Monitoring Horn checks the availability of your website or advertising elements for you 24 hours a day, 7 days a week. If an error occurs on your site, you will receive a notification that you can respond. You will be able to avoid possible losses due to a non-functional website. You can also automatically check your ad elements on third-party websites, such as purchased banners.