For handling sensitive stuff like password resets, you can try moving the topic to a private category only staff can access. The tricky part is that private categories might not sync with Zendesk because of how the plugin works.
@abinash889 solution is spot on! The issue happens because private topics often don’t have a category assigned, so they don’t sync. By tweaking the Zendesk plugin code as they explained, you can make it work by allowing topics without a category to sync.
If you’re okay with editing the plugin, give it a shot and test it out. Otherwise, you could handle these sensitive requests directly in Zendesk.