Duplicate Printers

So the R2880 (Copy 1) does not show up in the printer list for other programs e.g. Word and does not show up in Windows>Settings>Devices>Printers and Scanners?

I'm guessing there is a broken registry entry somewhere.  So a registry cleaner might fix it.  Or you could uninstall and reinstall the printer driver entirely, but that's not something I would recommend unless the default printer is the wrong one.  And even then, I don't think I would bother messing around with it.

I don't know how else to fix the issue. 

I have just remembered that you have already reset the preferences file.   Did you do that before or after posting this question?  You might want to try it again after rebooting your computer.

It looks to me like Elements takes its printer list from Windows resources.  Oddly, Elements has it in reverse order.

I don't know of any way to remove a duplicate from the list, but you might try resetting the preferences file. Go to Edit>Preferences>General tab and click the Reset Preferences on next launch button.  That often fixes printer problems.