We recently changed the behavior of our Alexa Smart Home skill when used with Schlage/Wink and August Smart Locks.
Due to a request from the Amazon Alexa team, we have disabled ability to Unlock your lock via Alexa when that action is included within a Routine. This change went in to affect on December 24, 2016.
Routines -- triggered by Alexa or other means, will continue to work, however the Unlock action will not run when that Routine is triggered by Alexa.
Using the Lock action within a Routine that is executed by Alexa is still supported, and Unlock actions will continue to work when triggered by other means.
We plan to revisit supporting this functionality once there are better means to limit access to security devices via your voice.
If you have any questions or concerns surrounding this change, please feel free to contact us at firstname.lastname@example.org and we'll be happy to assist.