I just tried logging in to the forum on Tor browser and received this error message:
I got around the issue by building a new circuit. A minor nuisance, but also highlights the futility of this kind of discrimination.
I would like to see an end to IP address-based discrimination. Please turn off this “feature” on the forum so that Tor users (and others who may happen to use “bad” IP addresses) can continue using the site without issue.