Hello we have the same problem as the following thread that was opened: https://community.atlassian.com/t5/Jira-Software-questions/Freshdesk-agent-is-not-set-as-the-reporter-on-Jira/qaq-p/2199202
We have reached out to Freshdesk and they told us if you have API endpoints where they can do a GET call of all the reporters and a PUT call where it will be updating the reporter name.