Problem with the port fowarded?

Can someone give me a tutorial for the ports? Because when I try to connect with mi portable Citra I can´t I try a lot of thing for make a trade on Inazuma Eleven Go Chrono Stones Wildfire & Thunderflash.
I thing that the problem it´s that the port is not opened but I already openened and it doen´t works.

In order for us to provide better support, we need to see the log generated by Citra. This guide will walk you through how you can obtain the log file: How to Upload the Log File.

Never mind, I already fix it

What did you do to fix it? Might help someone in the future.

The problem it´s that the system name and the username on the room was not the same