If you are unable to open a PDF or other files to edit or sign from within Google Drive or Gmail when using 'Open With' or can't upload directly on our site using the New Document or New Template upload pages, first check to make sure your file is under 30 MB and less than 1,000 pages and then simply try uploading the same file again and try a different web browser if your file still won't open in DocHub.
Once you have verified that your file does not exceed our size and page count limits for uploading to DocHub and tried uploading more than once and using a different web browser, we recommend that you try uploading a different file to DocHub to help isolate the issue further and determine whether it may be a document-specific issue that only affects uploading that one particular file. There are sometimes cases where a file has something unique about it where other files upload fine and just that particular file has issues.
If you are still unable to upload your file(s) to DocHub after trying the steps above, please contact our support team and let us know whether you were able to get any of your other files to upload, how you are uploading these files to DocHub (i.e. from within Google or directly on our site), and the exact text of any error messages you received.
If you don't feel comfortable attaching the file to your case, it would be very helpful to at least provide us details about the file such as its size, type or extension, and the number of pages.