We are currently setting up OAuth for an Amazon Alexa Skill. All tutorials on the web and threads on this forum work with one Redirect URI. Amazon however has changed to a total of three possible Redirect URI (Layla, Pitangui, Alexa) that should be handled. Authentication fails, depending on whether I use a German / UK / US account to link to the service. Has anyone yet stumbled on or even solved this problem? Help would be greatly appreciated!