There is a random issue with the forum software that causes it to display a "you've been banned" message to random people who have not been banned. This includes first-time visitors who have yet to register with us.
In every case we've seen so far, clearing cache and cookies, closing and reopening your browser, and coming back to sign in should fix this issue for you. If that fails, please disconnect the power to your router for at least 30 seconds, plug it back in, and try again. For those on a mobile device not using a WiFi connection, please power it off for 30 seconds, turn it back on, and try again.
If this happens to you, I'd like to ask that you contact us with your operating system, browser name, and let us know whether you were using a computer or a mobile device when you got the message.
We are actively working with the developers of the forum software to identify and fix the issue. The information requested above will help us pin it down, and your help with the process will be greatly appreciated!