Plex Plug-ins on Raspberry Pi3

Dear community,

I am using Plex Version 1.0.2.2413 on Raspberry Pi 3 , and I am currently having issues with the location of plugin folder.

I can install official plugins and I can view them

[URL=http://s312.photobucket.com/user/sanox_bucket/media/plex1.png.html][IMG]http://i312.photobucket.com/albums/ll352/sanox_bucket/plex1.png[/IMG][/URL]

Where are those ? Why are they not in var/lib/plexmediaserver/Library/Application\ Support/Plex\ Media\ Server/Plug-ins or in usr/lib/plexmediaserver/Resourses/Plug-ins ?

Also why when I put a custom plugin (for example unpacked .bundle folder) in "/var/lib/plexmediaserver/Library/Application\ Support/Plex\ Media\ Server/Plug-ins" and restart plex
using "sudo service plexmediaserver restart" I cannot see the plugin under channels ?!

I changed PLEX_MEDIA_SERVER_USER=pi in /etc/default/plexmediaserver and added ownership sudo chown -R pi:pi /var/lib/plexmediaserver.

I also added the plex user to my regular user’s group that owns the mount point for my hard drive sudo usermod -aG pi plex .

Under settings > channels this option is enabled for me : Disable capability checking

Please can you help me ?