Thanks for opening a support topic @jenisen. We’re limited to plugin related queries here in the Site Kit support forums, but you can reach out in the AdSense Help Center for assistance with ads.txt queries.
Note that if you did already ads an ads.txt file to your site, it may take some time for the AdSense team to check this ads.txt file and update your status. It’s possible you already do have a valid ads.txt file placed.
If you are having trouble setting up your ads.txt file, you can use a plugin such as ads.txt manager.
Finally, you can use the below guide for assistance with ads.txt files for your site. As mentioned, it can take a few days before your status changes within the AdSense platform, after you’ve submitted your ads.txt file.?https://support.google.com/adsense/answer/12171612?hl=en
I’ll close this support topic as it’s not specific to Site Kit, but do reach out if you have any further queries.
