Sorry for the trouble. We no longer have any integrated print services, haven’t for a couple of years now. It's even unavailable in the previous versions that used to support it. https://helpx.adobe.com/elements-organizer/kb/shutterfly-service-no-longer-integrated-with-photoshop...
If you're making just Photo Prints, you can use the Shutterfly website if you'd like, or whatever other print service you'd like. You might find the "File>Export As New Files" feature in the Organizer useful to export a set of photos for printing.
If you'd like to print a Photobook, you can export the book while inside the PhotoBook Editing workflow in the Editor. There’s a "File>Export Creation" choice that will let you export the book as either a PDF, or a series of JPEG’s (one for each page).
Hope this helps.