In the top screenshot you are making an OPC UA connection from Ignition, to OPC router, where Ignition is the client.
In the bottom screenshot it appears you have reversed the roles and are trying to connect OPC Router as the client to Ignition's OPC UA server, using the wrong endpoint information.
Ignition's discovery endpoint if you haven't changed any settings will be opc.tcp://localhost:62541/discovery. OPC Router must be on the same server in this case.
If you need to access it from another machine you have to change the Bind Address to something like 0.0.0.0 and then restart the gateway.