Hello,
you must have a singe site license. Here are the instructions, depending on whether the old site is still active or not:
Update Single Site Licenses when Changing Site URL
If you have a single site license, then whenever your site domain changes you will need to update the license for each plugin. For example, you might have been working on a development site at one URL, and now you have moved the site to a new URL. Follow these steps to deactivate the license at the old URL and activate the license at the new URL.
1. Visit the old site at the old URL.
2. Visit the old site plugin page.
3. Find the addon license and click “Deactivate”.
4. Visit the new site at the new URL and go to the plugins page.
5. Find the addon license and paste your license code, then press Activate.
Update Single Site License for a decommissioned site
It may be that you started working on a site, then changed the URL or deleted or otherwise decommissioned the site. In this case, follow these steps:
1. Visit https://wpgeodirectory.com/your-account/purchase-history/
2. Select “View Licences” for the product.
3. Select “Manage Sites”
4. Select the sites where you want to deactivate the license.
More information can be found here: https://wpgeodirectory.com/docs/installing-addons/#updates