Power Automate - get all projects from an overview/roadmap?

Hi

I am new to projects for the web. I am trying to figure out how to work with this tool and i want to create some smart flows.

But i cant figure out how to setup a flow to get all projects from a overview/roadmap

I have found the flow connector called Project Roadmap.

But i cant get them to work. I just get the error message "bad gateway".

Anyone able to help?