Installing Delete All Comments
Log in as a user with the Confluence administrators global permission
Open the Confluence Administration (gear icon) and choose "Add-ons"
Click "Find new add-ons" from the side navigation
Type "Delete All Comments" in the search bar (The correct version appears in the search results)
Click "Try free" to begin the trial or "Buy now" to purchase a license for Delete All Comments.
Enter your data and click "Generate license"
Click "Apply license"
Configuration & Permission
Delete All Comments uses the default rights system from Confluence. No configuration required.