In order to connect your account to XPOR you simply need to create the object and navigate to the 'Connect' button on the 'Account Details' tab (button is on the top left).
Once pressed a google sign in button will appear.
Clicking this button will bring up a new window. (If you are not signed into your google account on your browser the window will ask you to sign in) It will then ask you to allow XPOR.
Once you've pressed allow the window will close and return you to the Google Plus object editor.