About Gitlab JIRA integration

Hello,

  1. I have tried to integrate the Gitlab core with JIRA server. But not able to see the comments on JIRA issue when commit is created in Gitlab, Also, not able to access close JIRA issue through Gitlab commit.
    Can I get the confirmation about the integration as is it possible to integrate Gitlab core with JIRA server?
    If possible, then which features will be added after integration?
    Please suggest why we are not able to use these integration features.

  2. Also, checking for the Development panel integration. Please confirm which Gitlab license can be used for this?