There's multiple ways to change your public IP via Mudfish.  One of the easiest is Full VPN mode.

I think what I want to change is Somagu's public IP. My current network Public IP: 59.22.167.217. I want to change this. How can I change it? I also tried the method you said, but it is not what I want. I also made another attempt myself. I registered a new account from somagu, and the public IP assigned to that number is a new one. I think you must have a way to help me modify it.

Ooops... :-( I think I made the wrong answer for your question.  Could you please check it again?  I expect you can see new public IP now.

No use to see changes, or the original IP

Are you meaning that you can't see "14.63.227.176" public IP on your VPS configuration menu?  It's new one you can try.

What I saw was still 59.22.167.217. How can I refresh?

But I can really use the ip link you sent me.

Could you please log out and log in again?  I think it fix this issue.  :-)

ErrorFailed to connect to the host server.

Is it still same?  :-( Sorry for this inconvenience.