Ad Unit Error: Size Does Not Match
An ad unit can be adaptive or have a fixed size. If your ad unit is a fixed size, the banner on your site must match the exact dimensions of the ad unit.
To resolve the error, you should adjust the actual size of the banner to meet the requirements. The required size for your banner is indicated in the text of the error message (the second size of the two). The first size in the error message represents the current size of the banner on your site.
If an ad unit is not found (for example, due to incorrect installation, caching, blockers, or loading issues), impressions cannot be counted and no revenue can be accrued for that period.
For this reason, we strongly recommend verifying that the ad unit is detected immediately after installation and after any website changes.
If you have any questions about our platform, feel free to contact our support team. We’re here to help 24/7.
Updated on: 10/02/2026
Thank you!
