It won't load "An error has occurred" that's all I've been getting...

It was good when it worked. Now it just says "an error has occurred" and it won't load

School app Works

Good but... App is good, but why does it need the permissions to the accounts on my device? Why does it need to read, modify or delete contents of my usb storage? Why does it need FULL network access and to view network connections if it already has access to receive data from the Internet? Why does it need to prevent my device from sleeping? It's just another app running in the background to help drain my battery.

Nice