Make sure you have an anti ban multiplayer eboot installed.
Make sure you have a good internet connection
Open your NAT type
Don't try and force host if your internet is bad
If you are hosting menus, then inject them with GSC studio

Have you gotten the issue solved from the information the above user has given you?

yea fixed it bad eboot....

Good to hear. If you have any other questions feel free to make another thread.
Thread closed.