Plex Nvida Shield and WD Mycloud EX2 -- where'd my folders go???

over the weekend, the Nvidia shield got updated, and so did the Plex Media server app. my wdmycloud ex has not been updated in a month…
i lost access to my media folder on WDMYCLOUD … i had a restricted folder, that plex could access… it was seeing it… i have media content on there… and all running fine…until this weekend. all of a sudden… Plex can no longer see the folder.
a short term solution was to make the folder public. so anyone on my network could see it. but this wasn’t the case before.
i don’t want this folder public. anyone have any ideas what happened? my computers and other apps can all still access the folder when it’s restricted.
is there a way to make plex authenticate ?