First I think you should check whether Mudfish is working correctly or not. Please test with the following steps and let me know if it's still an issue:

1. Set the full vpn mode.
2. Open http://myip.mudfish.net with your browser.
3. If it's open and say that it's working, then try to access PangYa! Japan.
4. However if myip.mudfish.net said that it's working, but it's not accessible to the game, it means the Mudfish node is blocked by game publisher. You should pick another Mudfish node then re-try.

And if the mudfish settings for a specific game (item on the list) doesn't work, I should use the Full VPN mode?
Thank you very much.

hi how you bought the mudfish??

If it doesn't work properly with setting the item, you should use Full VPN mode temporarily. To work with item, it seems that the item needs to be updated. If you can send Packet Capture with Wireshark, I can update the item after analyzing.