I currently have two plex accounts associated with two different email addresses. They appear in two different user log-in accounts on the computer. I recently purchased a lifetime account for one of the plex email accounts. My question is. Am I able to use the paid account on both accounts? Not wanting to use both accounts at the same time. Just one or the other with the paid advantages.
Your Plex Pass is tied to one specific account.
You can invite your other account into the Plex Home of your Plex Pass account. It will inherit many of your Plex Pass privileges, such as unlocking the Plex mobile apps.
The recommendation is to use only one account on all your servers and clients.
Just log out everywhere and back in using only the account credentials of the one with Plex pass.
If you need separate watching history, create managed users as necessary.