That should be fixable. I can find the past ip addresses of the domain that seems to be simply expired.
185.183.98.47 is a working cladg server.
https://viewdns.info/iphistory/?domain=cladg.com
Now you can use your hosts file to map 185.183.98.47 to cladg.com to fix it.
Edit: or buy the domain and fix it for everyone if you feel like it. You could reserve it for the old owner.
Edit2:
that wasnt the whole solution, licensing server might have another domain / subdomain I havent found yet. host file wildcards are not supported in windows.