IP address not found?!

Alright, so sometimes when I try to go onto pointbuzz, I'll get a screen that says that this site's IP address couldn't be found. This happens randomly, and i don't know if it's a problem with my own connection, or the site's. Any idea of what's going on?

Sounds like an unreliable DNS. Set your DNS addresses to multiple unrelated providers such as Google 8.8.8.8 and Cloudflare 1.1.1.1