My Cloud Visible on Network but Not Other Wi-Fi Devices

My Cloud OS 3 Personal & Network Attached Storage My Cloud
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Betteboop57 - Is your My Cloud still working with your ATT router? I see someone who used this approach said it was a short term fix:
Had this running for a couple weeks now. It’s working, but I get warnings that the connection is lost or intermittent and warnings that the system has restarted. The switch is a good workaround, but this does not solve the problem of auto negotiation.