From Service Manual Kadam.net
The site is added, requirements are met. The next step is block creation.
First of all you should select the ad format (Push or Display Ads, Native is on the construction) enter the name and click Next.
Download the file and put it in the root of your website. After placing the file in the root folder, click the Check button. Сopy the code of ad formats and place it on all pages of the website.
Choose the block size and click Next. Select the Block size from 14 variations (200x200, 200x300, 240x400, 250x250, 300x250, 300x300, 300x600, 320x50, 300x50, 336x280, 320x100, 468x60, 500x200, 728x90).
Сopy received code of ad formats and place it on all pages of the website inside the <body> tag.