I followed multiple tutorials and used blogger.com to host my app-ads.txt, set custom redirect and the list of authorised sellers (squarespace hosts my website, but does not let me edit the root domain) and then remap the URL in squarespace dashboard. The link works fine, when trying example.com/app-ads.txt on my website but Unity's dashboard Monetization - Setup - Org Settings - App ads, does not accept it ? I am lost on what to do ? + internet seaches return nothing Thank you for your time! "We could not accept the media type of the resource at the given App-Ads URL. (rejectHint: (unsupportedMediaType) ) The IAB Ads.txt standard requires its content-type header includes “text/plain”. Review your Developer Website field in the Organization Info section above. If you haven’t already please create your app-ads.txt file."