WD has chosen not to tell we end users (those of us in this subforum) why they decided to remove the Shutdown option from the newer second generation single bay My Cloud units. Nor has WD indicated why they decided to confuse we end users by using 2.x for their newer single bay My Cloud devices versus using 4.x for the older single bay My Cloud models. We are end users such as yourself not WD support employees. We can only guess, speculate and shake our heads as to the confusing decisions by WD with their products and software.
Users who are using the second gen v2.x single bay My Cloud units are supposed to use WD Access to shut down the device. If the WD Access program isn’t seeing the My Cloud on the local network one should look into that particular issue to see if there is something specific on that computer (like firewall/security software or network settings) that may be affecting the program’s ability to access/see the My Cloud on the local network. The typical troubleshooting step of uninstall the WD Access program, then reinstall it is usually a good first step.
I assume that WD knows full well about the many complaints about the missing shutdown option even though the User Manual for the second gen v2.x single bay My Cloud units mentions the shutdown option in the Dashboard. Requests were made in the My Cloud Ideas subforum forum years ago to fix this lack of shutdown, but WD has chosen not to do so in all subsequent firmware releases for the v2.x single bay My Cloud models. As such I assume WD will never fix this particular issue no matter how many complain about it.
http://community.wd.com/t/bring-back-the-shutdown-button-to-the-my-cloud-dashboard/177758
There is also a web browser trick/hack that one can use within the My Cloud Dashboard to “unhide” the Shutdown option that some use or some simply use the web browser to issue the shutdown command while the Dashboard is loaded.