So I made a mc server with spigot and I want my friends to play on it. But when they login, it doesn't let then join. I have tried pretty much everything so far. I tried turning off my firewall, configuring settings, port forwarded and everything.
I use Norton Security Ultra and I have tried to enable the port through the firewall, I cannot use the Windows firewall because it doesn't let me due to an alternative firewall being used. I have tried to turn off the firewall too but it still doesn't let my friends login. The same error message comes.
It doesn't come up on my command prompt that they tried to join so I don't really know what to do at this point. Please help