I had that happen to me, too. I thought it was because I had my VPN running. Now that I am in on my laptop (I need to check the desktop again, should be the same IP since I turned the VPN off), I'm thinking there was a bug this morning.
I ran into this on another forum that I believe either uses the same software or server company (Woodnet.com) but was able to get back into there within a few minutes of turning off my VPN (which is why I thought it was originally a VPN issue, but this forum still banned me even a couple hours after turning off the VPN).