question

(My first post) I've got GameCircle achievements working and approved on Kindle Fire devices. On Android devices however i'm stuck with the following issue. When deployed on a Nexus 7, during startup, at the right time, the little white GameCircle window pops up at the bottom of the screen. When I click on it to sign in or create a new account, Chrome launches. When confirming my credentials, chrome displays "This webpage is not available" on the url amzn://com.wungi.knights?code=etc. I've been at it for two days but still completely stuck. Support desk suggested an issue with the security profile and/or the API key. I walked through that process again, made a new key but the error is still there. I've got adb running for debug output. I can see the service is ready, so something is working. All tips greatly appreciated!