Here the same problem, have tried 3 different modems (telewell 510v3 and 2 Zyxel models) and tried bridged/static ip+port forwarding and dmz mode, nothing helps. Have got nat1 and nat2 with different setups, nothing helps. All i got everytime when trying connect UNX check firewall setting or contact your ISP.
My problems nobody never join my games in public when i host, cant play weeklys, cannot see league situations and take assigments.
When playing local co-op with friends ps4 all is working but not my ps4. :/
What ports your game using, havent see that information anywhere? All other games working fine without problems with my ps4, but i want all achievements and cant to that if i cant solve problem.. or you
I bought game 2016 and then all was working fine when played few weeks, but now started again when my friend bought game few weeks again i have that UNX connecting problem.
I have called even ISP, but they cannot help either my connection is working fine and no closed ports and says that its game problem. I have put my time already 2 weeks finding solution and bought even new modem cos that. It isnt working, anyway Dead Nation and Super Stardust rankings are showing right and no problems with them...