trying to remove watermarks

[fsgarcia18]

So when I normally print this chart, there are boxes with little letters in them which appear to be watermarked. Then in one of the boxes there are 4 digit codes that go into each box. when i print it throug a printer, the 4 digit code comes through while the letter is grey'ed out. but when I use dopdf to convert it to pdf, the box becomes unreadable due to the letters output black instead of grey. Any thoughts?

[Claudiu (Softland)]

Hello,
Please send the file in question if possible along with the doPDF version and build you used to print it to [email protected] so we can troubleshoot this further.
Thank you.