This issue is present in Android mobile and Android TV version 7.27.0.14941-beta. The background for this topic can be found here .

[IMPLEMENTED] Plex Android mobile & TV beta - Live TV & DVR - Partial Recording is now Possible

basilh January 29, 2020, 5:09pm 4

There has been a development. Refer to this post.

Topic		Replies	Views
Recording TV Show already in progress Live TV & DVR livetv-dvr , android-tv	21	1310	June 9, 2020
On mobile plex Android app, no record button General Discussions android-mobile-legacy	2	129	March 14, 2020
Plex for Android 7.25.0.13736 Player Betas android-tv-beta	6	426	February 20, 2020
How do you record from the Android TV app? Live TV & DVR livetv-dvr , android-tv	9	612	May 3, 2020
Live TV and DVR – Now out of Beta Plex Features livetv-dvr	74	183	January 9, 2020