Hi,
After purchase the premium version of plugin you can use the download link to obtain the next updates without pay for them again.
The Plugin doesn’t use the users information on service, the plugin creates its own maps with data stored in WordPress.
If you want to display multiple categories in the same map, in the current version of plugin, you should insert the shorcode like follow (only available in the premium version of plugin):
[codepeople-post-map cat=”-1″]
In the next version of plugin will be possible to pass a list of categories IDs