[Failed Connection (Session Unavailable)]

i try this, i close the game and open again and nothing happens

[Failed Connection (Session Unavailable)]

Well, this error happens when I try to connect me to the game that this is my cousin.

The error happens in these steps:

1: I click on the name of the char from my cousin and I click "join session"

2: it appears below "join compled"

3: a window appears saying "wait, trying to connect"

4: it appears after "session unvaliable"

I would like to know how to stop this from happening, because I wanted to play with my cousin, however this error does not allow me to.

I would like if someone tells me how to fix this.

They can find me in game as IIChronoSII ('ll be waiting in forun answer)

Thanks to attention