Sorry folks, I've just checked and it opens up fine for me. Maybe something transient? I believe I'm not violating any of their rules, but these free holsters are strange sometimes :-(
Please report here if you still aren't able to get through, I'll try to raise that in their support forums.
That image there is a "vanilla" one, just BSP compiled as-is. There's not enough space on Altervista to provide more than one image along with the packages.