Google analytics api returns 400 error for my request

Hello I'm new for backend admin interface development in drupal 7.53. I was trying to create a site visitor graph dashboard using google analytics api module and i followed each and every steps to get my google analytics api secret key and client key. After that I copied both client key and secret key and paste into the module text box area and clicks on the "Start setup and authorize account" then finally end up with Google's 400 Error! Any suggestions might be helpful.

Thanks,