一个月没上PO了，今天想打打忽然发现有问题，点击GO ONLINE就
Disconnected from the registry: Connection refused
You can try a different connection by
changing ports.
意思就是断开连接，连接拒绝，可以换一个端口。然后试了几次右下角的刷新都没用。。
谁能帮我？