> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.aads.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Managing Ad Units: Categories and Color Configuration


###### Categories

New ad units are automatically assigned the "Unknown" category. The bot typically assigns specific categories to "Site" type ad units within 24 hours after you embed the ad unit on your site and start generating unique traffic. The "Unknown" category is generally not targeted by CPD campaigns, which can negatively affect your earnings. If your ad unit is older than 24 hours, generates traffic, and is still categorized as "Unknown," please don't hesitate to contact support.

###### Appearance

To change the colors of your ad unit, you can append GET parameters. For example, see the following [URL](https://ad.a-ads.com/1?background_color=000000&text_color=ffffff&title_color=ffff00&title_hover_color=ff0000&link_color=00aa00&link_hover_color=00ff00). You can also generate this code for your ad unit through the web interface on the ad unit's page.

###### Is it possible to insert multiple ad units on the same pages with different sizes? Can I submit the same website twice?

Yes, you can create as many ad units for a single page as you wish, but that doesn’t necessarily mean you will earn more. Please read [this article](https://a-ads.com/blog/2018-10-04-how-many-ad-units-are-enough-for-a-website/) for details.

###### How to monetize traffic from dynamic pages with no set URL?

Please refer to [this article](https://help.a-ads.com/en/article/how-do-i-create-an-ad-unit-for-a-site-with-many-pages-each-with-unique-or-dynamic-url-1owpu4e/) to learn how to optimize traffic from pages with dynamic URLs for better monetization.