Once you have paid and obtained a registration number and activated the Print Artist Platinum as well, no nag screens or pop-ups should appear any longer unless the software supports built-in automatic update and you're notified about this update. Restart the software and check its behavior because that registration might be related to account registration to enjoy various benefits offered by the application, otherwise, it shouldn't be there. To further diagnose the behavior, contact the developers of Print Artist Platinum.
