They "are" showing as Not Final?  

IL had some update issues a while back and many people had to uninstall and reinstall IL to get the forms to print.

For Win10
Right click the Start button > Settings > Apps   scroll down the list to Proseries 2018, click Uninstall    It will act like its going to uninstall the whole program, dont panic, it wont!   Another window opens with a list of modules to uninstall, choose IL state.   

I believe for Win7, its under Control Panel > Add/Remove Programs  Uninstall PS18