Marketpress is not working correctly?

I am asking a question about one of my websites popcetraclassics.com. Even though the support is enabled on the dashboard, it will not allow me access in to ask questions there.

My first question is: I have done everything according to the instructions given. However, the product category is not connecting to the store. So it not showing a shopping cart and not allowing purchases of the music to be made. Can you please help me with this issue?

Second request: On the Classical Music page, the words Product Category: Classical Music...I would like to change that to just Classical Music and change the font color to white. Again, I do not know how to change this.
Any help you my give, would be most appreciated.
Thank you,
Patty