Please note that Push Jobs Server 2.1 released today is NOT compatible with Automate. Do not upgrade your Push Jobs Server installation to 2.1 if you are using Automate.
We are currently developing a new job dispatch system for workflow that will remove Push Jobs from the architecture, which is why we are not investing in making Automate compatible with the new version. We expect this to be released in the next 6 weeks. Until that upgrade is available, please leave your Push Jobs Server installation at 1.x.