You can check your Message Log to get an idea of what's going on. I get this error [Notice] Closing stream for '[scrubbed].onion': hidden service is unavailable (try again later). So yeah, it's most likely down. I haven't been able to access it in days. Edit: the Cleaned Hidden Wiki is up and just as good. Also removes the CP http://3suaolltfj2xjksb.onion/hiddenwiki/index.php/Main_Page