So, recently at school I had free time and decided to play MineCraft. When I got home, I decided, "Hey, I wanna play some more" and I tried to login. Didn't work. Waited about an hour, tried again, still didn't work. Waited 24 hours. Didn't work. Tried one morning, again, didn't work. But when I connected to the school WiFi, I found I could login without any issue. I have no idea why this is happening, but it would appear on any WiFi network other than my house's network, MineCraft allows me to log in.