Plex,
You have gone way past the reasonable time frame for bringing this paid-for service back on-line.
We have been patience but this is now over-a-month (July 1, 2019) since you took down the Premium Music library functionality that each of us, in this post, has paid for.
Apparently, removing this important functionality was just an afterthought in the announcement, not the main body like it should have been. This is why many of us missed it.
Announcement (see last paragraph after the word “Also”): Important information regarding Premium Music libraries in Plex
Please expedite returning this vital component of our music libraries back to service.