Hello there.
Amelia Lite does not include a lot of features the commercial version includes – it’s there to give you an idea of how the plugin works, and it can still be used by a lot of users who work alone and don’t require a lot of premium features.
As for the code – our development team can share the source files on a custom request. However, please keep in mind, that these are written in a JS framework and are a bit complex for less experienced developers to modify. Also, it may become an additional burden to constantly include these adjustments in the updates that we release every month.
Kind regards.