When exporting PDF in Procore, letters become shaded or blacked out

I am trying to replicate a PDF on a contract I am making and I can't figure out why when exporting the PDF file out of the software we use, the letters become shaded in or blacked out where the watermark is. Here is a picture because it is hard to explain. It appears fine in the Acrobat reader and in the program I used to add the PDFs to the contract but only does this when being exported from our software.