For anyone else having this issue I found a post on another chat about the same issue which has the links to the APK’s to download the last version of Plex that did not have this bug. I have downloaded and all is working fine again. You need to remove Plex from your device and then download the Apk via the link below on the post by Rokixslugg and install manually which is very easy. Also make sure that you have disabled auto update in the play store or wherever you download your apps from so it doesn’t just get written over again.
Link is here: Can't Open Folders Anymore! Android! "Other Videos" - #2 by RokixSlugg
