Easiest way is to take a screenshot of the emailed UOA that Blackstone sends you in a PDF. Open the PDF in fullscreen, hit PrtSrn (Print Screen) which takes a screenshot of whatever is on the screen, in this case the UOA PDF.
Open MSPaint, hit Ctrl-V or Paste and use the paintbrush tool or shape tool in any color you want (pink recommended) to block out personal information. Save it as a .jpg format and use BITOG's image uploader with your new post in the UOA section.