REST API Documentation page missing detailed information

Hi, I'm currently looking for detailed reference of Acrobat Sign API. Everything's been working fine, the UI seemed to be exactly like in the tutorial video like so:

But some how later this afternoon, my UI changed to be a simple Swagger UI which details of schema model has been got rid of (image below) Are there any ways to rollback to the previous UI? Is it the problem on my browser or Adobe just updated Swagger UI on their site?

Thank you in advance for your answer.