You shouldn't have a problem clicking on any Group site and posting in the threads (storylines) in those groups. It's just that if you aren't a subscriber to that Group you can't 'create' a storyline.

Not sure what it is you mean you can't access.

Just remembered ... about the time you posted your comment here there was a bit of a 'glitch' in QL and we all had the same problem - could even edit other people's topics! lol

Maybe that was when you had your problem with access.