Unfortunately, I am not able to browse the internet and retrieve up-to-date information, as I am a language model AI and have no capability to access external data. However, coupons or promotional codes generally offer discounts or special deals to customers who use them when purchasing goods or services. These coupons may provide a percentage discount off the total purchase, a specific monetary value off the total, or free gifts or shipping. The specifics of the dd8shop.com coupon would depend on the terms and conditions of the offer at the time the coupon was valid.

As an AI language model, I do not have access to current and accurate information like website or business contact details. However, I recommend visiting the dd8shop.com website and looking for their contact page. Their contact page should contain information such as a customer service phone number, email address, or physical address where they can be reached. Additionally, you can try searching for dd8shop.com on social media platforms, such as Facebook or Twitter, to see if they have any contact information listed there.