The deadline has passed to sign up for your new API. If you haven’t done so, do it right now to avoid having your API shut off for too long. October first is the date Google starts charging for people using their AdWords API. Why are they doing it? Because they can. What is an API key? If you don’t know, chances are you don’t use one. However, if you are paying for someone to manage your AdWords campaign and they haven’t renewed, it’s time for you to find another person managing your campaign or question how they are able to manage your campaign.