Plex Integrations doesn't work anymore

Hi,
I have a Plex Server which works fine. Some months ago I’ve setup the Home Assistant integration and I was able to control my plex server from HA.
Now I can see the media on the card in HA but I can’t control my player anymore. if I click on the play or pause button I have: “*my player does not support this service”
How can I fix that?
Nothing has changed on my config, I’ve only updated HA and Plex.
Thank you!

What type of Plex client is it? Plex removed the ability to control some clients like Plex Web a few months ago.

Thank you, the client is Plex for Desktop running on Widows 11

Pretty sure that had its control API removed as it’s basically Plex Web in a wrapper. You’ll need to use the HTPC client instead if you want to control it using HA.