Excuse me there is another problem but here in forum. I'm trying to edit the main post after more than 8 hours past even the last comments. The text below is my opinion for editing, it may be useful. But an error massage says you can edit after 3600 seconds past posting! Why?
SOLVED! Me and my friends cannot provide a connectable custom game. We all forwarded ports, enabled upnp in modem settings, disable firewalls and made network profiles private. But non of us has the upnp enabled on the network status in the game. Not even one of us is able to invite connectable request after the update. before this I just forwarded a port and started matches, after it started friends could connect.
What can we do?
Solution I used and it works: with static IP (maybe its not nescessery, we have to chek it), I have forwarded UDP ports: 4976-4976
and the another UDP port: 3074-3074
If still doesn't work, we have to try and open UDP and TCP (or if there's the chose TCP/UDP in your router settings) port: 5555-5555
Note: You have to let plutonium launcher to connect or to be connected through firewall's rules. If you don't know how to do this, just read about in in the Plutonium site or search in google anyway. Even if you can't, go to windows security settings and turn off all 3 of firewall options. Remember to turn it back on, after you play.