The Hold for Authentication error is a bug that occasionally happens on the Mac version of the PridePrint client. When you try to print, you get asked to log in to a non-PridePrint screen and then you get an icon of a printer in your dock. If you click that icon, you get a screen like the above where your print jobs say Hold for Authentication. There are two ways to fix the issue.
Fix 1 - Run PridePrint Reset
If you've had PridePrint installed by Hofstra University staff, running the PridePrint Reset program in your Applications folder will fix the error.