Plex' lifetime pass is iirc tied to major versioning. You'll have lifetime for as long as 2.x is the version they're on, but if they ever release 3.x, it's time

Plex' lifetime pass is iirc tied to major versioning. You'll have lifetime for as long as 2.x is the version they're on, but if they ever release 3.x, it's time to open your wallet again. No promises were made at the time on if you can stay on 2.x forever. Extremely scummy move, they changed those terms in 2017 if I recall and got a ton of flak for it.