UBB.threads PHP Forum Software Community Forums UBB.threads 7 Version 7 Support New forums I created shows "Access denied"

Hi there

We have just purchased a new UBBcentral Forum.
So i'm still new to this.

I'm having some trouble when I create a new forum.
At first, the forum is not showing at all.
Then I set it to be a Teaser forum. Then it shows.
But the forum isn't accessible. (Access denied.)

How do I get the new forums to be accessible, after it was created? Is this a cache thing?

Anyone else had this problem?

Thank you