It seems that Beejive is down today. The mobile apps cannot login, and even their web site (http://www.beejive.com) is down.
It's ironic - while researching this just now, I came across a writeup about Beejive in the iTunes store: "Beejive's reliable and efficient networking has been tested and proven on multiple platforms.". Oops!
I like Beejive quite a lot and hope this is very temporary!