The connected status means that the power supply is connected in the chassis, but not powered.Probably forgot to connect a power cable to the second PSU, or its not fully attached, or not plugged in at the other end, or you got a faulty cable.

Microsoft classifies it as a PUA:Win32/InstallCore,SummaryThis application was stopped from running on your network because it has a poor reputation. This application can also affect the quality of your computing experience. We have seen this leading...

You contact Meraki support.Either they will help you get it working, or they will send you a replacement..https://meraki.cisco.com/support/