Managed to get it working. Had to first right click info.plist and edit in:

<key>NSMotionUsageDescription</key>
    <string>This app wants to track your pedometer readings</string>

To access motion. But for some reason if it either could not build or there was an integrity error. The error "failed to parse plist data type key" just came and went, after I restarted and cleaned solution a couple of times. And if you are having trouble with the app not deploying on device, go to "Build -> Configure Manager -> check deploy".