I saw your previous thread when you first introduced yourself as an alternative to Preev.com which is offline.
Although I don't know when they
(the developer/owner of preev) fixed the site but preev.com actually is now working
(i accessed it by the time of writing), but it doesn't have secured
(https://) connection for now.
I too didn't notice that but Preev.com is up again. Now we have two sites preev.com and PNNV.com with additional options of exchange as well.
Both working at my end, seems like the maintenance is over.