Site seems to have techincal problems that I'm not geek enough to understand. This a.m. for instance it is outrageously slow even by OCDO standards and cursor response time is abysmal. Maybe they lack capacity in some sense.
As to blocking, I haven't been afflicted yet though I have been cautioned. Moderators occasionally seem somewhat arbitrary and capricious and I suspect them of latent political correctness.
So your problem could fall into either or both areas. I wish you luck as the site is enjoyable and informative and fills a real need.