Setting it to non-zero defines the position on the left side of the page. Does it show?

Which browser do you use? Any add-ons like no-script?

update

simple check: putting <script>alert("Free Nodelet activated")</script> into your Free Nodelet should give you an alert whenever the free nodelet shows.

At https://www.perlmonks.com on the right side of the screen I get Free Nodelet right under XP Nodelet and the "Free Nodelet activated" popup, but Free Nodelet and the popup do not show on any other pages I've tried.

> Which browser do you use?

Google Chrome is up to date
Version 75.0.3770.142 (Official Build) (64-bit)

Looks like you've only activated it to show on front pages only.

Go to Nodelet Settings and either check

[ ] All nodelets off
[X] Use my frontpage nodelets everywhere
[download]

or number it on both lists

 
Frontpage Nodelets     Non-Frontpage Nodelets <---
[download]

sidenote: I'd deactivate the popup now. :)

Cheers Rolf
_{(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery FootballPerl is like chess, only without the dice}