I can not connect to the mudfish server since yesterday.
When I try to connect, it said I have connected, but I can not use it.
And the IP address can not show when I click the refresh of the IP address in the dashboard webpage.
PS
I had used the Full VPN mode
Please confirm that How to check the basic functionality works fine in your environment. It’s a first thing you should test.
If it works fine but still same issue, then please try to change mudfish node to another. 
If mudfish nodes are blocked by the game publisher then not enough way to bypass this issue…