First, please check the size of your document – our system can process files that are less than 20 mb only. If everything is fine with the size of your file, try using different browsers. We recommend Google Chrome as it has the best compatibility with our website. If you still cannot upload the materials, please send them to our email – support@1ws.com. Please, don’t forget to mention the order number in the subject of your email. This will ensure that the materials will be uploaded to the correct place. You can check your personal account for the additional materials. If you can see them in the Files section of your account, this means that we have successfully received all the documents and uploaded them to the system.