I tried to invite someone to my Plex Media Server via Plex Home and now it is stuck in a state where I can’t cancel the invite and the receipient can’t accept or decline it. The invite is there, it shows up on both our ends, but pressing accept, decline, or cancel does nothing.
Never mind, I figured it out.
Turns out when clicking cancel on an invite you’ve sent, there is a pop-up to confirm the cancellation, but that pop-up doesn’t show when viewing the web interface from a mobile device for some reason.
Since the web interface is intended for desktop, this pop-up ‘bug’ would be out-of-scope anyway.