Each promotional code has specific conditions, such as a certain validity period or a minimum order value. Additionally, a promotional code cannot be combined with other codes and may only be valid for specific products. If the entered promotional code is not working, please check if your order meets all the conditions. Ensure that you've entered all characters correctly – sometimes a zero can look like an "o" or a one like an "I." If the code still isn't accepted, feel free to contact our customer service. We're here to help!