There is currenly an issue with the connectivity to the US servers (us.bintube.com).
In the mean time you can connect by making one of the following changes to your newsreader:
1/ Change the server address to eu.bintube.com
2/ If using BinTube Usenet Reader (the free version) set your region to Europe.
We apologize for the inconvenience and we will update this notice as soon as it's resolved.
This issue has been resolved.