Hello Orestis,

1)

I am sorry, I could not verify the purchase code you gave us, I think you probably sent us something else by mistake.

For the purchase code please do the following,
-> Go to https://codecanyon.net/downloads
-> Click as it's shown in this image:

-> The text file downloaded should have something like this inside:
Item Purchase Code:
b3e5fe72-00b0-4019-a8e2-06fb26264742

Thank you for the help,

2) Regarding your question:

The scenario I am trying to recreate is to hide the store for all visitors, allow registered users to see the shop (I use an Easy Registration Forms to enable users), and when a user is finally logged in I want them not to see and prices or Add to Cart button. The last option to hide from logged in users the prices is done with a Pricing Rule but I dont see a way to hide the Add to cart and quantity also.

I think you are referring to Variable Products.

For Simple Products, it should look like this, no add to cart button or quantity input:

For Variable Products, indeed, these are not hidden. Instead, the button is grayed out + if the user clicks add to cart it will not work.

This is not directly controlled by our plugin. This is controlled partially by the theme. 

I have a solution for you with a code snippet. Please add the following code snippet to functions.php (or to any snippets plugin):

remove_action( 'woocommerce_single_variation', 'woocommerce_single_variation_add_to_cart_button', 20 );

This will remove the add to cart + quantity button.

Kind Regards,

Stefan

My pleasure. And thank you for providing the code. 

If I can help with anything, let me know.

Have a good day,

Stefan