What causes this?
This is usually caused by making too many new accounts, reloading the page too many times, using bots, or spamming the chat. If you wait you will be able to log in again from your IP. Let me know if you are having any other problems.
Deb
Problem is, I did none of those. I bet a little and I bet fast (keyboard shortcuts), but that's all. I went to reinvest what I was playing with and it wouldn't let me, so I refreshed (the first and only time) and that's when I was banned.