How do you add notification to plex app at samsung TV

So, I am trying to add the plex client to Sonarr.

Under the connect tab I click the big + and choose the plex client, right.
I give it a name, make sure that every notification is on and fill in the ip address for my tv. (Where the client resides.)

I do keep the default port of 3000, but I am not really sure if that is right one. At least I havn’t confirmed this.
Then there is some entries for user and password. Hmmm, what could it be?
Tried with my plex credentials, but to no avail. Only respond when I hit the test button is, that it can’t connect to this client.

I’m missing something here, please help enlighten me. Could it be that easy, like there is no support for the plex samsung app and notifications from sonarr yet?

The default port for plex is 32400. Check your plex server to what port it is using. The cred are your plex username and password.

I’m not sure that it is support due to how its actually run (not a dedicated application), you could also try XBMC as Plex Client is the old Plex front-end not the new Plex Home Theatre, just change the port to 32400.