Hi jrdios,
Thank you for your purchase.

Please take a look at our documentation where you can see how you can successfully update the plugin.

You can follow this guide :

1.) Download zip from this link

2.) Use FTP to open /yourwordpressfolder/wp-content/plugins

3.) Delete existing wpdatatables folder.

4.) Upload previously downloaded wpdatatables folder through FTP to plugins folder (unzip it)

5.)  Go to WP-admin panel, open Plugins section.

6.) Deactivate wpDataTables, and then activate it again.

Best regards.