Does this script include all source code with unminified version?
Yes, this includes everything, including composer.json, package.json, webpack.mix.js, different plugins and all in it.
Where can I access documentation?
The documentation is inside the files.
Does author provides installation support?
Does author provides customization?
Can I use this script for multiple instance?
No, if you have purchased regular license then you can only use this script only for 1 instance. If anytime, it is found that you have used multiple instance of this script, your support will be blocked immediately.
PHP >= 7.1
Zip Archive Extension
Curl Support + allow_url_fopen enabled
Mysql Native Driver Support
GD Image Library
The installation instructions are included in the file.
A regular license allows an item to be used in one project for either personal or commercial use by you or on behalf of a client. The item cannot be offered for resale either on its own or as part of a project. Distribution of source files is not permitted.
An extended license allows an item to be used in unlimited projects for either personal or commercial use. The item cannot be offered for resale "as-is". It is allowed to distribute/sublicense the source files as part of a larger project.