Moodles

I can see a lot of advantages to using moodles in the classroom because of its controls. I am however, frustrated by the technical difficulties I am having. I have been able to register as a "quest" on Prof. Weller's moodle but I can't get into it as a class member. Is anyone else finding this to be a difficulty? I think it's "Cookie" related. I know that there is a class discussion sometime this week but I can't get into the moodle to find out when.