How to activate Chargebee integration

Provide API Key to BI Book when activating. Here is instructions how to retrieve it:

ref: API Keys - Chargebee Docs

To create and configure the API keys, select Settings > Configure Chargebee > API Keys and Webhooks and then click on the API Keys tab. Any existing API keys are listed.

The API Key should be of a type Read-only Key with access to All resources.