Cannot get PDF Stamper to stamp.. White screen only? by Tips and Tricks HQ Support Portal › Forums › WP PDF Stamper › Cannot get PDF Stamper to stamp.. White screen only? Tagged: blank, blank screen, manual, pdf stamper, text to stamp, white screen This topic has 26 replies, 9 voices, and was last updated 8 years, 11 months ago by admin. You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In