Yes, use the forum search feature, magnifying glass icon upper right, as there are numerous discussions on how to shut down the v2.x firmware single bay My Cloud units.
https://community.wd.com/search?q=shutdown%20category%3A105
They range from using SSH to issue the shutdown command, to using a web browser hack (see this link) to trigger the My Cloud Dashboard to issue the proper shutdown command, to using WD Quick View to issue the shutdown command from your computer.
WD Quick View for Windows: https://support.wdc.com/downloads.aspx?p=188
WD Quick View for Mac: https://support.wdc.com/downloads.aspx?p=183
Or see the following WD Knowledgebase article:
