Start Kodi application > settings (gear icon) > add-ons > install from zip file > settings > Enable: Unknown Sources > yes > hit back button (on keyboard) > Install from zip file > yes > locate the repository.astreamweb-2.0.2.zip file you downloaded.
Then click on Install from repository > AstreamWeb addons > Video add-ons > AstreamWeb > Install
If you receive error messages during install, then retry the install, keep retrying and eventually it should install the addon.
Hit back button (on keyboard) > Look and feel > Skin > Estuary > Install
Restart the application > sign on > Fire TV Cube,Max or better > Select Language > wait for app to exit.