This extension requires one license per seat
Requires Unity 2018.1.0 or higher.
* Works well on Unity 5 , Unity 2017 , Unity 2018 and Unity 2019
* Only Standard (Built In) and Lightweight piplines is supported
** HD pipline (HDRP) is not supported
* Note: You must import Post Processing 2 for Unity 2018 and 2019 from Window->Package Manager
Also you can download unity 5.6 and 2017 from doc file