We provide free instruction how to configure Disqus API Key and Disqus API Secret
Go to API Disqus link and login with your credentials.
Click on the "Register new application" button.
Fill the "Label" field.
Fill the "Description" field.
Fill the "Organization" field.
Website must be http://www.yoursite.com
Go to section "Authentication"
Callback URL must be http://www.yoursite.com/module/MODULENAME/disqus
"MODULENAME" - folder name with the module
Select Default Access "Read and write"
Go to section "Organization"
Fill the "Organization" field.
Fill the “Terms of Service URL” field
Click "Save changes" button.
Go to section "Details -> OAuth Settings"
Copy the generated "API Key" and "API Secret"