Puma First Order Discount Code Gives Invalid Code Error

I visited the Turkish Puma website to place my first order and, as advertised on the site, I subscribed to the newsletter to receive a 15% discount code. After completing the subscription, I received the discount code and proceeded to use it with the jerseys I added to my cart. However, when I clicked the “apply discount code” button during checkout, the system gave an error stating that the code was invalid. Because of this error, I was unable to complete my order and could not benefit from the 15% first-order discount that was promised. I request that this error be fixed and that I be provided with a valid 15% discount code that I can actually use, or that a new usable discount code be sent to me so I can place my order under the advertised conditions. If Puma cannot provide this discount, I find it misleading that such a campaign is displayed and I request that this promotion be removed so that customers are not misled in the same way.