Samsung TV 2018 : can't change inputs.

[SeeDborg]

Hi, my TV is a middle range Samsung of 2018 (model 55Q8F2018), I managed to add it and control it but the commands to change source inputs HDMI1, 2, etc.) does not seem to work.
Here is my configuration :

  - platform: samsungtv_custom
    name: TV Samsung Q8
    host: !secret_ip
    port: 8002
    mac: !secret_mac_adress
    sourcelist: '{"HDMI1": "KEY_HDMI1", "HDMI2": "KEY_HDMI2", "PC Loïc": "KEY_HDMI3"}'
    applist: "YouTube, Plex, Prime Video"
    protocol: ctl_qled

I tried different protocols, and changing port to 8001, but either I have the same result, or nothing works.
The apps can launch though.

Could you help me please ?

[GoSpursGoNL]

This integration doesn't seem to be maintained anymore. I switched to the official integration in the meantime, doesn't that one work for you? But indeed with my 2016 model, also input/source switching doesn't work consistently.