With the addition of GitHub Apps as a method of integration with CircleCI, some users may now see the option to link GitHub to their account missing under the "Account Integrations" tab in their User Settings.
How Do I Link?
At the bottom of the "Account Integrations" tab in your User Settings you will see the following blue text link:
By following the link, you should be able to set up your account integration. If you continue to run into issues after trying this, please feel free to reach out to the Support team.