I can't find the user "add_on_zendesk_for_jira" on my JIRA platform?

[Solène Lerouge]

I need to find it in order to add it to the group JIRA users. 

Maybe that's the reason why some of my JIRA field like EPIC LINK are not in my JIRA issue formulary I create from Zendesk...

Although in my zendesk parameters, I can thick the field EPIC link from a dropdown list, but nothing changes after I thicked it, I still have the 5 same fields in my JIRA issue (from zendesk): name, description, project...

[Paul Reeves]

I think this is the "dedicated" user that the instructions suggest you create specifically for this integration. Thus, if you are not using a dedicated user you probably just need to ensure the user you are using has the right permissions and is in the right groups.