From what OS did you get this error is it from IOS or Android?

It looks like a connection issue. Are you sure that you are not using a fake green wallet?

If you sure that you are using the legit wallet try to update the app and restart the device on IOS. For Android try to clear the cache of that app and reboot the device(Note green wallet from Android is buggy).


If you don't have any funds yet I suggest you switch to other wallets like BRD or Mycelium for IOS and Electrum or Mycelium for Android OS.