I have a 21-day ArcGIS Online trial org.
My account is a Creator + Administrator user type. When I go to Content > My content > New item > Developer credentials, I only see OAuth 2.0 options. API key credentials are not listed, and I see the message "Looking for API key credentials? Contact your system's administrator for access"- despite being the org administrator.
Org URL: indi15af8660491d.maps.arcgis.com
How do I enable API key credential creation on a trial org?