You can download OAuth Client module zip file for Drupal 7 from here.
Please Note: While doing attribute mapping for FitBit, save the user Uid Key under the First Name attribute field instead of the First Name Key that you get from Test Configurations.
Congratulations, you have successfully configured FitBit as your OAuth Server.
Please note: This step is mandatory for your login to work. Click on the Save button on the bottom of the page to save your attribute configurations.
Congratulations, you have successfully configured the miniOrange Drupal 7 OAuth Client module.