These are the most common problems that would cause PDF Stamping to fail:
- Make sure you have actually set up PDF Stamping for your product according to our instructions -- uploaded PDFs do not just automatically issue stamped downloads unless the product is properly configured for PDF Stamping;
- Wait at least 15 minutes after uploading your PDF before you test a download for that product to see if it's stamped;
- Note that free download links sent in bulk using our Updates feature cannot engage PDF Stamping;
- Examine your PDF product's Payment Variable Information URL to make sure it exactly matches the URL we provide on our PDF Stamping instructions (e.g., the
http:// at the beginning may be duplicated) -- it may be a good idea to just delete the URL you have in the product's settings, copy the URL fresh from our help page instructions, and paste that in (then be sure to click Next until you can Submit changes);
- If the original PDF you uploaded was locked with a password:
- Make sure you include the password in the product's Payment Variable Information URL for stamping;
- Use the original file's Master password if it has one, or use the User (read-only) password if it has that without any Master password;
- Make sure the file's password compatibility option has been set to "Acrobat 5.0 and later" (or lower), not "Acrobat 6.0 and later" nor higher;
- Consider uploading an unlocked file, since we add a randomized Master password to every stamped copy, and you can specify a User (read-only) password in the stamper URL.
- If the PDF you uploaded is larger than about 20 MB, or if you are finding that the initial download is unstamped yet later downloads on the same link are stamped, please see this help page.
