Usually, such a message appear in case you are using an unstable internet connection.

Please check the speed of your internet at any resource that measures Internet connection speed, for example, SpeedTest. The normal speed for playing mobile games online is 2 Mbps +

In this case, please, do the following recommendations:

1. Change your internet connection (switch from wi-fi to mobile internet or vice versa)
2. Reboot your device and router
3. Install and turn on VPN application, for example, TunnelBear
4. If you are already using a VPN application, turn it off.

If none of the recommendations above was helpful, please contact our support team using this link and describe the situation, specify when the problem occurred and what happened before the error message appeared.