you have failed to connect.

[RoCkY4]

hello so i have a good internet i can play any game i want on a good ping but on bf2pr every time i try to join the server i chose one and click on connect it says you have failed to connect. please check your network connection(S) and try again i tried so many things to fix it and it didn't work pls help me with this problem but when i use vpn the game work fine i don't know what to do help .
https://imgur.com/NMCeMJU