Before contacting support, please try to go through the list of most common support cases. Thanks a million!
The browser can't find the onion site
I'm using Tor but the site is not loading
The site is only accessible through HTTP. Please make sure you are using HTTP URL http://blockfrostvb56g4cy6horwhgkle36z3yn5knk4cirg64pwhrm6xefad.onion.
Tor can be unstable and/or slow, due to nature of the underlying network.