Downgrade to an earlier firmware to keep app working and turn off auto update in settings.http://community.wd.com/t/wd-my-cloud-v3-x-v4-x-and-v2-x-firmware-versions-download-links/148533
Downgrade to an earlier firmware to keep app working and turn off auto update in settings.http://community.wd.com/t/wd-my-cloud-v3-x-v4-x-and-v2-x-firmware-versions-download-links/148533
Reach out to Support for more assistance.