Enable Cross-Origin Resource Sharing (CORS)
Enable Cross-Origin Resource Sharing (CORS) on your Acrolinx core server. Check out this article on how to enable CORS.
Optional: Domain-Wide Installation
G-Suite Admins can use the add-ons in the marketplace for a 'Domain-Wide Installation'. This installs Acrolinx for Google Docs for an entire organization or groups within an organization. The Google Docs and Google Sheets add-ons each have their own product page in the G-Suite Marketplace.
Secure Acrolinx with SSL
Make sure that your Acrolinx core server is secured with SSL, because Acrolinx for Google Docs and Sheets only connects to Acrolinx using HTTPS. This means that your Acrolinx URL in the Sidebar has to start with the prefix
https and follow this pattern: