Error

Every time I open the app, I get a 'Failed to retrieve data' message once a day and can't log in... I'm basically playing right next to my WiFi router, and my WiFi is connected properly, but this keeps happening. So, I keep turning my WiFi off and on, but it still pops up a few times. Of course, if I close and reopen it from the tabs a few times, I can log in, but it's quite stressful. I don't know if my phone's low storage is also a cause.