Please note that Bulk Linker App does not collect any data while you're using it. All information around your configuration is stored in your Jira instance and is not shared or collected anywhere else.
Customer data is collected through Atlassian Marketplace only when evaluating or purchasing Bulk Linker (Name, company name, email address, Jira license tier and Jira hosting type). This information is collected by Atlassian and can be retrieved for support purpose only. That information is not shared with any other party.