Guest on Plex logged in to several devices

Guest on Plex logged in to several devices.

I am a guest on three of my friends Plex. I do not own the accounts. But I have logged into my Plex on my friends TV. How do I kick them off?

As I said Plex is not mine I’m just a guest

In general, you change your Plex password and tick the checkbox “Sign out connected devices after password change”
here https://app.plex.tv/desktop/#!/settings/account

However, currently you have only one iPhone and one web browser signed into your plex account, so there is nothing there to kick out.