C28.com typically allows customers to cancel or change their orders, but there are specific time frames and conditions that apply. Generally, if an order is still being processed and has not yet been shipped, there is usually a possibility to make changes or cancel the order. However, it is important to act quickly since once an order is in the shipping process, modifications may no longer be possible. To ensure that you have the most accurate and up-to-date information regarding your specific order, it is advisable to check the current web page on C28.com, as well as review any relevant sections related to order modifications in the customer service area. This will provide you with the guidance you need to manage any changes effectively.