SharePoint Embedded Register Container Problem

Hello everybody, we have follow this learning article https://learn.microsoft.com/en-us/training/modules/sharepoint-embedded-create-app/3-exercise-set-up-configure-sharepoint-embedded. We activated SharePoint Embedded Trial and create a container successfully (Also have create the app registration, certificate and creat client secret). But when we try to register a container we get this error:

Anyone configured sharepoint embeddes successfully in the recent period?

Thanks in advance!