My Ai stopped working. I've done nothing wrong.

My AI is just stopped. What did I do wrong? Why can't I use it anymore? I've always been nice to it and respected it. What the fuck am I supposed to do now? I just wanted to do my fucking homework! I'm still on plus. I didn't do anything. I've used it just as I normally do. What is going on?<br><br>It feels like it's doing this on purpose. It's like they're cutting people off, for absolutely no reason. I'm on the 20 limit for a while now. I'm not sure what I'm supposed to do. Maybe I'll switch to perlmind.