Question: What are the network requirements for the license server in r9.8 and onward?
You need to be able to access port 80 (http) to license erwin DM online for version 9.8 (pre-patch) only.
Version 2018 R1 and 2019 R1 or if you have the proxy patch installed on 9.8: HTTP Secure (HTTPS) communications (via port 443) with the License/Activation server
The IP address 220.127.116.11
The proxy patch is included in Data Modeler 2018 R1 and onward.