If you are seeing the following messages when accessing the API Portal, please perform the below mentioned corrective steps to restore access to the application.
HTTP Status 403 – Access to the requested resource has been denied
Go to SAP Cloud Platform Cockpit, Select the Services from Left side menu –> Choose API Management service Tile
Step2:Click on API Portal (Roles & Destinations)
Step3: Add the following roles to your user.
With this you would be able to login to the API Portal application.
We are working towards resolving the issue.