PSA: Android Pay will not work on Android N Developer Preview

The Android N developer preview is out, but for those of you flashing the binaries you should be aware that any services that rely on passing Google’s Compatibility Test Suite (CTS) will fail. This means that Android Pay will not work for the time being. If you’re okay with giving this feature up, then you should be good to go (although remember it IS a preview and hence there will be plenty of bugs!)

source: xdadevelopers