No "customize" button?

Hi there!

I have watched the tutorial and checked the user manual.
WordPress 4.4, WPD 2.2 and WC 2.4.12

I created the page (not published in the menu) for the customizer.
I created a product, parts (Front&Back), added fonts and few cliparts for testing in WPD.
The product has the created parts checked, is a simple product, virtual, has a price and a category and a product image.
The checkbox “Customizable product” is checked.

When viewing the product in frontend, I don’t get any “customize” button, only if I check the “The clients can design from blank” I see a “design from blank” button. In the cart I can’t also customize the product.

How should the “customize this product” button look like? In your video tutorial I see only the blank or upload own design buttons.

Or am I misunderstanding something? thanks

https://wordpress.org/plugins/woocommerce-products-designer/