How to stay in touch with the community on Product Hunt?

Two days ago we have launched our MVP on Product Hunt: https://www.producthunt.com/posts/listva. During this time, the number of subscribers has grown to 147 people. We would like to stay in touch with these people, including inviting them to test our site and leave feedback. How can you advise to do this? I read the Product Hunt guides on posting, but I can't figure out how to publish product news