Why my playit.gg isn't working?

hello my playit.gg isn’t working can someone help me? this is screenshot while waiting for the program what was already running

if there is nothing to do with it atleast give me other program what is same as playit.gg );

Did that link open up in your browser? If not copy/paste it into a web browser.

You could try ngrok as an alternative, but I dont think it does UDP connections.