I have this problem and coincidentally it started the day I installed the Android version of this game on this page, it may be a coincidence or it may be a virus:
My wifi stopped working and the little light that indicated that the wifi was working from what I think was called a modem went off.
This always happened at the same time of night and sometimes more during the day.
My family contacted the internet provider and they told us that we were the only family this was happening to. He looked at the log of the modem I think and it said that the log was full of failed attempts by my cell phone to access the network, I think it was the internal Wi-Fi network, which caused the log to fill up and caused the Wi-Fi to turn off.
My wifi is password protected.
This started after I installed the game. And it left when I disconnected my cell phone from that Wi-Fi network.
Do not install anything else that day or later.
That's why I think the Andriod version of the game may have viruses. But maybe it's a coincidence. Anyway, I thought it was important to say it.