Hello there,

Thank you for reaching out to us.

The basic license covers one domain, but an unlimited number of its sub-domains. You have a Dev 20 license but they all work insame way.

-1. The best option is if you have the staging installation, on a sub-domain,

you can activate the license on a limitless number of sub-sites like that.

Also to note,

you are only required to activate your license on the live/production version of a website.

When you need to test the plugin on a staging/test/dev version website, or on your local /intranet installation,

there you can just manually download the Plugin installation from your TMS Store account,

and you can also manually update the license without activation.

2. If you need to change the domain on the license,

the easiest way is to log in to the 'old site' WP-Admin, go into our Plugin settings/Activation, and hit "deactivate" button on the licence there;

Go in the new website, in the Plugin settings/Activation, and just paste the Purchase code there;

It will automatically recognize that your license is now switched/registered to the new domain.

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You can also do this through the Store Account.

 In our store go to "My Licenses" and click on the "Manage Domains" button:

From there, you will be able to deactivate the old domain (while it's still active), and then simply activate the new domain in wpDataTables settings/Activation, once you move the site.

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Regarding migrating the Amelia installation so that you don't lose any data;

The easiest way is to clone your website. 

You can do that by using the Duplicator plugin. It will generate a couple of files that you can transfer to the new domain and it will create an exact copy of your website.

The Duplicator plugin can export only up to 500MB of data, so if your site is bigger than that, you can use the All-in-One WP Migration plugin.

- Other than cloning your website, there's a way to migrate only Amelia's database tables.

There are around 47 tables with wp_amelia_ prefix that need to be moved. Please note that wp_ is the default database prefix, but on your end, it could be anything, so look for your_prefix_amelia_ tables.

Besides that, you also need to go to wp_options and search for option_name "amelia_settings" - which returns one row, so you need to copy the option_value and paste it in the same field on the other site. 

Note that this contains all the info from your old website, so you will need to replace the URLs in this cell. 

Hope this helps.