Somebody else is having problems with the client getting stuck at 30% while login in? You know, the screen with the "Terra #0" square on the middle, it says: "Login failed, error code 0" It only lets me in if I have a VPN on. In my Android phone everything is working normal, it's just the PC Client which is acting up, they're even using the same WiFi.
I tried disabling the custom DNS, manually adding a rule to the windows firewall, I also use NetLimiter and it has all the permissions too, I'm connecting from Mexico and the VPN connects to USA so maybe a region lock? I'm on windows 10 and connecting via Wi-Fi, my Ethernet module died so I haven't tried a cable yet
Source: r/arknights · by /u/GarouD