How to reach the vendor
Support
Email → support[at]elfapp.nl
Portal → ELFAPP Technologies Support channel
In-app
Contact form → Use the contact form to drop us a message
Message form → In app, you can use the web messaging form to drop the administrator a message
To view some of the documentation for the BulkOps app for Jira (Pro), the in-app help button should give useful insight by giving you a direct link to the documentation pages.
From the “Need help” drop-down menu options, you can visit any of the pages that will allow you to perform the needed task you seek.