An unfilled impression, or blank ad, is an ad request that didn't return an ad because none were eligible to serve. 

Some reasons why your impressions  are unfilled:

- New accounts. Sometimes new accounts take up to 24 hours to start displaying ads correctly.

- Content of site or app is forbidden by us. Sometimes the issue is affecting only a few specific URLs where the content is forbidden and not the entire site or app.

- Unsold inventory. A rare scenario, MediaFem have average fill rates of 99,57%. 

- Misconfiguration or bad deployment of the ad codes. 

What to do?

If your account is not new or you think is an error from our side, please open a support ticket here.