Portal 2 Co-op Workshop doesn't work

[AJtheCabbage]

Been broken for a while now, is this gonna get fixed?

[Ace]

How dare you, Valve has been busy with some VERY important stuff, like... trading cards and... yeah, what the ♥♥♥♥ Valve?

[John]

Yeah. How dare you? :)

[cowboyjon]

Co-op in general doesn't work for me :(

[Sensibwaay]

I've just played co-op with my friend so it definatelly works.