Why is the product not being added to the cart?

Hello! Could you please tell me why adding a product to the cart might not be working?
I'm displaying the product name, price, and the add to cart button in the last column through Views.
But when I click on add to cart, the page just reloads, and the product is not added to the cart.
Everything should be working. Did I click something wrong or what?
Drupal 7, Drupal Commerce module.
Thank you in advance for your response or advice!