Hello, I am experiencing this issue as well. I have WD Discovery installed on a couple devices. When it first happened I was unable to login, but reinstalling the software fixed the problem. Now I’m dealing with the same problem on a different device and nothing seems to help.
Logging in on the app or website works fine. For me it says ‘‘sign-up service not available’’ under the password section if I try to login. I would like a solution, because for me the drive is currently unusable.
WD Discovery: v. 3.0.384 and My Cloud Home: v. 188.8.131.52