Ads.txt "is only a text file that can be placed on the server of your blog and takes information about the ad network used by the blog owner, and the owner wants to show ads on the network of these advertisements on the website. The main consideration behind using this ads.txt file is to protect publishers from fraud and viruses because you only use those ad networks Will authorize you to display advertisements on your website, which you know and therefore any malware script that shows ads on your blog, your permission from an unknown source, can not do the job that it should do.

You just need to follow step by step guide to add a custom ads.txt file in your blogger blog.

Follow my guide here>>https://www.realitytech.com.ng/2018/09/how-to-fix-and-add-costom-adsense.html?m=1