Apologies for the noob question, however I’m trying to set up Mudfish for Final Fantasy XIV. I’ve paid for credit and installed the client and what not, how do I know if it is working or not?
how do I know if it is working or not?
Please check Final Fantasy XIV - A Realm Reborn about how to set up the mudfish and check How do I know if its working? too. 
Also what is this error? MUDEC_00049: No entry for SID 298.
Is this issue still same?
Same with me, mudfish isn’t working with FFXIV right now. It says 3000
ping and won’t even let me launch the game if I’m running mudfish.
In a mudfish, 3000 ping means the packet loss. Please make sure that How to check the basic functionality works fine.
처리해 드렸습니다. 
확인해보시고 문제가 있으시면 언제든지 답글 부탁드립니다.