Adobe Express is not available. You do not have access to this service. Contact your IT admin...

I have the job of connecting Adobe Express Embed to a web application and have created a new Adobe account for this purpose. I followed these instructions. When calling the full editor according to this documentation, I always get the error Adobe Express is not available. You do not have access to this service. Contact your IT administrator to gain access.

I have been looking for a solution for hours. Without success. Even a new account did not provide a solution.

new.express.adobe.com works with my account. I was able to edit an image there. developer.adobe.com shows my Adobe Express project. Under "APIS" the "Adobe Express Embed SDK" is listed with my API key and under "Allowed Domain" my developer domain "localhost:44325". So everything looks correct there. adminconsole.adobe.com shows my user and developer, but no administrator. Therefore, I assume that my user/developer is already the administrator.

I ask for help, because I can't get any further.