Do you mean they are (not installed) rather than (uninstalled)? That’s OK albeit counter-intuitive from the user interface point of view. Just go on and click Upload. You’ll see a message with a button suggesting to “Download & Install” the required package. Click it and see the progress.
Ah thanks! Yes “not installed” is correct! I found the “Download & Install” button, and now it works! Thanks for your help!!
(I also managed to create a node for an LCD 20x4.)