Cannot stream anything because no Plex server updates provided by WD

I agree, I find it hard to believe that Western Digital cannot provide any sort of detailed answer or estimate to when these issues will be fixed. The suitably vague answers they have provided thus far suggest nothing is being done or that this is a very low priority to them, it’s not to your customers.
Many people have have bought expensive WD My Cloud products to specifically use as Plex Media Servers. These are now as good as obsolete if the issue around android plex apps is not resolved. Western Digital seem to have no respect for their customers. How about a detailed and specfic answer Western Digital???