Problem solved: Nightingale Legend of Nightingale failed to connect Unable to connect Unable to connect.
The Legend of the Nightingale is coming to Steam on February 21st, but players may face some issues when trying to play online, such as failed connections, inability to connect, or unstable connections. In order to enhance the gaming experience of players, here are some possible workarounds that players can choose according to their individual circumstances. 
Problem solved: Nightingale Legend of Nightingale failed to connect Unable to connect Unable to connect.
Solution 1: Check the network connection.
The first thing to do is to ensure the stability of your network connection. If you're having connectivity issues, you can try reconnecting to a Wi-Fi or wired network to make sure you have a good signal. Sometimes, network fluctuations or disconnections may cause the game to not connect properly. As well as open the Dolphin acceleration tool, bypass network restrictions, and connect stably to the game server.
Solution 2: Release the running memory.
Running too many programs and games may cause the system to run memory to be occupied, which can affect the connection of The Legend of the Nightingale. By closing unnecessary programs and freeing up running memory, you can improve the efficiency of system resource utilization and optimize the running effect of the game. The operation can be adjusted according to the individual device and operating system.
Solution 3: Restart the router.
Problems with your router may cause an unstable network connection and affect the normal connection of the game. Players can try restarting the router, i.e., disconnecting it from the power supply and waiting for a few minutes before reconnecting. This can help restore the stability of your network connection and may resolve issues of connection failures, inability to connect, or instability of your connection.
These methods provide some basic solutions to hopefully players will be able to enjoy the Nightingale and explore this mysterious and beautiful game world.