Connecting PowerBI to REDCap via API with token

Hi All, I found a public REDCap API (see https://cran.r-project.org/web/packages/REDCapR/vignettes/TroubleshootingApiCalls.html which midway down says 

If it helps to start with a different REDCap server, you can use this dummy project containing fake data hosted by the OUHSC BBMC. The url is https://bbmc.ouhsc.edu/redcap/api/. There are three key-value pairs: (1) the ‘token’ is 9A81268476645C4E5F03428B8AC3AA7B, (2) the ‘content’ is record, and (3) the ‘format’ should be CSV. When checking your own server, the token value should change, but the content and format should not. It should return five records in a CSV format. The ‘status’ should be 200 OK. 

I installed Postman in Chrome and tried the dummy API at bbmc and both it, and my API work within Postman.  It is clearly an error that I am having in trying to set up PowerBI.

I tried to set up a very simple connection like this but I still get an error Details: "Web.Contents failed to get contents from 'https://bbmc.ouhsc.edu/redcap/api/' (501): Not Implemented"