Unable to Duel

I go to the Duel Room after I log in and there's this filter and that's the only thing that I can click on. I can't click on the deck I'm going to use, I can't select whether to duel or to watch and I can't click on the other options. he Advanced, Traditional, blah blah blah, naming duels and such.

For some reason, all I can do is watch. Why is that?

this probably means you do not have a legal deck to you save your deck and set it to default?

None of the cards themselves are illegal...

did you set it to default?

Yes, but it's fixed now. Apparantly i had to check all of my decks and in two of them I had Giant Trunade. Thanks.