Your license key switches the plugin on for a site. Each key has a number of activation slots, one per site. The License panel shows your key, its status, who it is licensed to and every site that uses a slot, and lets you move the plugin between sites.
Where to find it:

Free List Building, then the Settings tab. The License panel is the first thing on the screen. Before a key is activated, the plugin shows only this panel when you open Free List Building.
What the panel shows:
- License Key: your key, shown with only the first and last few characters, the rest hidden behind stars.
- Status: Active, or Not active.
- Licensed To: the email address on the license.
- Activated Domains (for example 2/3 sites used): each site that uses a slot. This site is marked "(this site)". Every other site has an X Remove link.
The buttons:
- Activate (when no key is stored) or Replace key: paste a key into the box and click it.
- Refresh License Info: asks the license server for your latest details and connects the key for plugin updates.
- Deactivate This Site: releases this site's slot. The plugin returns to the license screen on this site until you activate again.
- All my keys & downloads: opens your account portal with all your keys.
Step by step: activate on a new site:

- Install and activate the plugin, then open Free List Building.
- Paste your key into the box under Activate Your License Key. Your key was emailed to you when you purchased. Lost it? Click "Find it in your portal".
- Click Activate.
- The status changes to Active and the full menu appears.
Step by step: move the plugin to another site:
- On the old site, open Settings and click Deactivate This Site, then confirm.
- On the new site, paste the key and click Activate.
Step by step: free a slot from a site you cannot reach:
- On any site where the key is active, open Settings.
- In Activated Domains, click X Remove next to the old site and confirm.
- The slot is free for a new site. This frees the slot only; it does not switch the plugin off on that other site.
A real example:
Sam's key allows 3 sites and shows 2/3 sites used: yoursite.com and a staging copy. Sam builds a new site for a podcast, so Sam clicks X Remove next to the staging copy, then activates the key on the new site. Activated Domains now lists yoursite.com and the podcast site.
Tips:
- Free the slot of a staging or test copy before you delete it.
- If plugin updates say the site is not connected, click Refresh License Info.
- For help with a key, see How to Get Support or "License Won't Activate".