I've added Community Store to my site and I am looking to change someones group. To do this, I am taking data when a person signs up. I am looking to point them to a page with an embedded product. When purchased, i want to set this user to a new membership level so they can see certain pages.

When I add the product to a page, I don't see a "Buy" button, even though I have selected to have one displayed in the product block.

Is this possibly a theme based issue, or is there a guide I can follow to embedding a product into a page so you can buy there (ideally avoiding the cart and going straight to the payment method)?