Architekt by Dessign Layout Question

I’m starting up a site called 99-hearts.com and I installed a free theme called ‘Architekt’ by Dessign.net.

As you scroll past the main large masthead, the grid below is suppose to have 3 boxes and another 3 boxes below that and so on but it ends up being in 2’s.

I need it to be like this
X X X
X X X
X X X
X X X

But it ends up like this
X X X
X X
X X
X X
X X

When you visit the site 99-hearts.com you’ll notice it right away.

Can anyone help me fix this strange configuration?
Thanks.