Hi @Bmoze,
When you changed power outlets did you also change anything about the way that your Nucleus was connected to the network?
In the thread that Geoff linked to above (thanks Geoff!), some Synology users have found that, since a recent Synology update, they’ve had trouble connecting like normal. Using the IP address of the Synology appears to work, so if your device uses a static IP try entering that into Roon instead.