To help you connect faster to your game, please go through the following steps:

• Close all apps that are running on your device.
  
• Once you have closed the apps, switch on the airplane mode, and then power off the device.
  
• Wait for a few minutes and power on the device.
  
• Go to Settings > Game Center and log out of Game Center.
  
• Next, Disable your Airplane Mode and enable Wi-Fi.
  
• Now that you have the connection up and running, log back into the Game Center from Settings > Game Center.
  
  

You should now be able to load your game again.