Sometimes, the website does not allow you to place an order due to the restrictions of attached file size. If you have been trying to attach some files to the order registration form, check whether their format is supported and whether they do not exceed the allowed file size limit. Instead of attaching all materialsto the form, try to forward those files to the customer support team via email. They will then send the files to your assigned writer. Remember to indicate the ID of your assignment in the email title.