If you wish to save your watch later queue please follow these steps.
- Open the Plex Web app https://app.plex.tv/desktop
- For any media item in a library click the ellipses menu and choose Get Info
- Click
ViewXML
on the bottom left of info window - Look at the URL and copy your plex token (see image below)
- Copy and paste this one of the URLs below in a browser window placing your token after the
=
then hit enter to load it
https://plex.tv/pms/playlists/queue/export.csv?X-Plex-Token=TOKEN
Will give you a CSV file with episode title and URL on one line, separated by comma.
This should be more easily usable in other apps.
https://plex.tv/pms/playlists/queue/export?X-Plex-Token=TOKEN
Will give you a simpler XML file than the above mentioned workaround, with just title and URL in it.