Plex Roku App version 6.7.3 broke - Plex app crashes

Plex Players Streaming Devices
16

Plex will not load on my Roku Ultra model 4640x . Checked my settings on Plex and it says version 3.57.1

I try to launch the app it flickers and goes back to the Roku main screen. Will not load. Plex seems to be working fine on my PC.