The rest API is not enabled for this organization – how to select API type using MySalesData G-Sheets Connector for Salesforce | mysalesdata.com

When anyone uses  MySalesData for Salesforce Google Sheets Add-on  one can face an error:

The rest API is not enabled for this organization

This happen because by default in MySalesData for Salesforce enabled REST API. This a modern API  is available only for Salesforce users who have an Enterprise or Unlimited edition of Salesforce. If you don’t have that edition you have to use SOAP API that is available for all types of Salesforce editions.