Dont they regularly block sites that have geniune footage on them. It turns the cautious and undetermined away.
I doubt there is anything wrong with the portal 12 site. I've been there plenty times in last few days and had no problems at all.
And the photos come from the portal 12 site, from memory the secure team 10 video even states that.
It is possible to sign up to the portal 12 site but I haven't tried that would be a massive faff with Bulgarian. But it would allow someone to ask in the comments below the pictures for witnesses and the original photos.