I think you may need to update the IP ranges for AA Classic Server (Archeage private server)… I am only able to connect to the game with FullVPN mode turned on, otherwise basic mode wont connect to it…
I have also send the packet dump i believe you may need for this…
I’d left my answer on the packet dump topic you uploaded at Private Support menu. Please check it there. You can find your topics at https://mudfish.net/forums/iwrote link.