If the campaign does not receive impressions, follow the steps below:
Check the status of the advertising campaign
The campaign status should be displayed as "Active".
Check the status of the ad materials
The status of the ad materials must be "Active".
Check the balance status
Make sure you have funds in your account.
Note: for the Clickunder format, the balance must be more than $10.
Check the targeting settings
If only a few categories are selected for delivery, the targeting parameters are very narrow, or the bids are set too low, the campaign may not receive impressions due to high competition for this traffic.