Which URL to call to launch swagger-ui when using metasfresh provided as cloud-ERP

Hello all,
I have a 7-day lasting test access for metasfresh on cloud. I would like to test the web-service API capabilities for product management to exchange with another system.
I am struggeling in calling the swagger-ui page, which should be accessable, according to the documentation, by “https://instance.name###.metasfresh.com/app/swagger-ui.html#/”. I adopted that URL according to my metasfresh, but it doesn’t work. I also tried the variants I found in the community, but without success. I allways receive error 404, page not found.

What is the correct URL to access swagger-ui from cloud installation?

Thanks a lot in advance.

Best regards, Michael