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LE360 support teamDefault ads serve when no other ads can serve. Here are some reasons this can happen:
Your standard ads are not scheduled to serve. Check the ad start and end dates for your placement. Make sure that these dates are correct. If the ad start date is in the future, the ad cannot serve yet. If the ad end date has already passed and you set a hard cut-off, the ad cannot serve anymore. Please navigate to the ad properties to check the ad dates
All your other ads use targeting, and the user doesn’t meet the targeting criteria. Check to see if you’re doing any country, device, or audience list targeting on non-default ads. Please navigate to the ad properties > scroll down to the targeting section, and check the targeting applied. If the targeting criteria won’t met, ad won’t serve
All non-default ads use frequency capping. If a user has disabled cookies or device IDs, frequency capped ads will not be eligible to serve, and default ads will serve. Please navigate to the ad properties and scroll down to check the frequency capping settings
You sent your publisher standard tags even though your placement uses only rich media creatives. The standard tag format doesn’t support rich media. Make sure you send the right tag type for your ads. Only Iframe and Iframe/JavaScript tags are eligible to serve rich media creatives.
You’ve implemented JavaScript tags, but JavaScript has been disabled in the user’s browser. If the user has disabled JavaScript, the <noscript> section of the tags will serve and the default ad will appear. If you’re still encountering issue with the default ad serving, please reach out to the LE360 Support team, and we will help you to resolve them