In that case I’m unclear what you’re trying to do. The online server has no web address to set, other than the proxy setting (which few ever use). The only setting of consequence is the IAX port setting.
On the portal you have your "Server" settings and your "Node" settings. In your case, you have 2 servers configured ("Allstarlink" and "KJ5ICR"). You also have a couple of nodes configured. In the settings for each node you choose the associated "server" (right column, top popup).