When you click on the word dashboard in the CoRE app what happens
Live logging is in the https://graph.api.smartthings.com/ide/logs for whichever Shard you have. FAQ: How to find out what "shard" (cloud slice IDE URL) your Account / Location is on? (Thanks @JDRoberts)
But live logging will only show after you evoke the app. So have a computer open and your phone. press the app and then look at your logs and click on the words CoRE.