My friends can not connect to my astronomy server. Please help

Q

Quang343

Guest
I am the one who hosted the server . through tunngle. When my friends try to connect to sever . they encounter an error . an existing connection was forcibly close by the remote host. Another one is able to connect to my server. But after a few second . he was diconnected . and can not reconnect again . i'm very frustrated and don't know what to do . please help me.