Google has made it easy to control who has access to your current sheet. Keep in mind, SheetLink only works in sheets with the add-on installed and activated.
API Keys & Authentication
From your google sheet, select "Add-ons" > "SheetLink" > "🔐 Authentication" for all apps requiring authentication.
All API and authentication keys are securely saved as Google Document Properties of the current Google Sheet only and are never accessible by the SheetLink team. App API keys can be used with respective SheetLink app formulas by anyone with access to the Google Sheet.
The "key=reset"option will reset the authentication for any app