Took fw update 2.11.133 and now have multiple new shares I can't delete

My Cloud OS 3 Personal & Network Attached Storage My Cloud EX4
2

Been there, got the t-shirt.

There are a couple of threads:

Tldr;
The only way to truly get rid of the issue is to, I can hear the what?!?! now, is to off load your data to a new drive. Then format your your existing drives. That was the only way I was able to get rid of the issue.

If it makes it easier, WD will ship out a new enclosure to you.