Google Post Pageviews Error

After setting up OAuth access and trying to authenticate via my Google account, I get:

Google Post Pageviews Error: Access Not Configured. The API (Google Analytics API) is not enabled for your project. Please use the Google Developers Console to update your configuration.
Update settings →

Yet further down the page, it says:

You are connected to Google Analytics with the e-mail address: xxxxxxx.

Your token expires on: 2015/05/19 at 7:27pm.

Disconnect from Google Analytics »

Refresh Google API token »

Any suggestions?

Thanks

https://ww.wp.xz.cn/plugins/google-analytics-post-pageviews/