Diablo 2 - Europe

I am trying to connect do Battlenet (Diablo 2) Europe, but I get disconnected right after trying to log into my battlenet account. Is there anything that I can do?

Could you please confirm that it’s also same with Full VPN mode enabled?

Not sure that this issue is caused by that there’s a missing game server IP on the mudfish game item. If it works fine with Full VPN mode, I need to ask some game packet dumps…