With a recent prompt to update Plex this was my experience with Firmware 2.31.163 ( I have successfully done this process with the previous WD firmware without issue)
Outline of Apps Issue:
I was prompted to update Plex
Download Plex Update
Went to Apps within WD EX2 Ultra
Click install manually
Prompt comes up to ACCEPT terms. Scrolled all the way down to the end for the terms and Accept button does not function
I try this in two other browsers IE, Edge and again in Firefox, same issue unable to Accept Terms
I go to WD support site, states uninstall the Plex App
I make a Backup Config first of the entire setup I have in place
Uninstall the Plex App
Try again, same issue cannot install manually Accept button doesn’t work, no access to the App Store which states No More Apps and No Plex
I call support they state to do a Full test.
Instead I opt to Import my Backup File
System reboots, takes awhile while re-importing
I can now access the App Store and Manually Import the new Plex App.
A most unreliable product. after 3 weeks of troubleshooting dropped audio files, a System Only restore within the WD EX2 Ultra was the solution that fixed the issue.