Not able to join some challenges

[Janus]

Just went to join a Gold Group challenge for Ugh a Thug. It didn't join me to the challenge first time around, and gave no error message. So I went and re-joined it.

http://gyazo.com/efbe32f8dff6c81b97830e9833ee5dc4
http://gyazo.com/7117204bdca224a7a3100c525a985c9f

The open Gold challenge remained after I quit. I had to quit the queue to get rid of that. At least I've never seen this error before lol.

Still having the same issues with duos as previously reported.