When you look for them in the Dashboard, and they’ve disappeared, have you checked the Share page to see if the external USB drive (I assume your using an external USB drive) Share name is listed?
If it is listed is it appended with a “_x” with “x” being a number?
If so this is a well known issue that cropped up in recent firmware that is easily fixed. The workaround is to eject the USB drive (using the USB icon in the Dashboard), then go to the Share page in the Dashboard and remove every Share name containing the USB drive name. Then reinsert the USB drive, then go to the Share page and rename the USB drive back to its origional name minus the “_x” numbering and Safepoint should find the previous Shafepoints on the USB drive.
There are several past threads discussing this duplicate Share name issue and Safepoint not working with the latest firmware update. Just a few past threads:
https://community.wd.com/t/new-release-firmware-release-04-04-02-105-1-27-2016/148441/68
https://community.wd.com/t/mycloud-creating-numerous-aliases-for-same-drive/160161
https://community.wd.com/t/usb-drive-makes-new-name/152675
https://community.wd.com/t/dublicate-shares-after-reboot/153348
