Can't setup playit 0.9.3

When I launch the playit.exe file it says:
Visit web page: playit - making it easy to play games with friends Or enter code: c9797a81dc Setup (v0.9.3)
then after few second the exe file closes itself
and I can’t connect to my tunnel
how do I fix it

It sounds like you might have a different program on your computer closing the playit program. Check with your antivirus or firewall programs. You might need to explicitly enable the playit program to prevent it from being closed.