No app-ads.txt
1No app-ads.txt. Expected if the app doesn't sell ads programmatically; if it does, buyers that enforce app-ads.txt won't bid.
How to fixPublish app-ads.txt at the root of the developer website listed in your store page (https://<domain>/app-ads.txt) as plain text, with the lines your ad networks and mediation partners give you.
Evidence (1)
url: https://instagram.com/app-ads.txt result: a web page instead of a text file final_url: https://www.instagram.com/accounts/login/?next=https%3A%2F%2Fwww.instagram.com%2Fapp-ads.txt&is_from_rle dev_url: https://creators.instagram.com/edits/