I put in the same hostname in IDR/ICON and only IDR finds it. It’s like the ICON api call is running the pagination and never ends up finding it based on that hostname.
Let’s see if the new version of the plugin solves the issue and, if it doesn’t, let’s get a support case opened up for us to track this. I’ve seen this exact same behavior because of a case-mismatch issue (and no, the capitalization IDR uses in alerts doesn’t match the agent’s name in the agent management page). I wouldn’t recommend opening a case until we’ve verified the new version of the plugin has the same problematic behavior.