Done a bunch of those kind of things - on another computer now, so expect to be banned here, too. They have remained as insecure site for years, so maybe that is what tagged me. Anyway, it has been nice talking to everyone if the Admin can't get their act together and fix the site problems! Will try to drop in from time to time to see what is going on....
I think that since you can login from another IP means the address is really the issue.
The problem with blocking dynamic IP addresses is sooner or later an innocent party will inherit the blocked address.
Sometimes unplugging your modem for several minutes will flush the problem broadband address.
Have you sent your blocked IP address to the moderator?