I am new to all of this but believe I have successfully installed CoRE to my account as I am able to load it to the mobile app via My Apps. I click the Dashboard to initialize and it says it was successfully initialized. But when I try to create a Piston, I click IF and get the error message "You are not authorized to perform the requested operation. Get the same error if I try to delete CoRE, but it does actually delete it.
Has anyone else experienced this and found a solution. I am using a Lumia 950 and the Windows Smartthings app.