I get 503 error while listening to music on iphone 5s through mobile network. I can connect to WD My Cloud disc but after a few minutes of playing music via My Cloud app I get 503 error, and can no longer connect through mobile network also with other devices. I think that iphone is triggering this error and till now it happens only when playing one specific album. Through WiFi everything works flawlessly. My WD My Cloud disc is connected to tp-link router, which is connected to technicolor modem/router. I have tried a few solutions form this site. Unfortunately, I did not succeed.
I have found some interesting clues. I can connect through mobile network to WD My Cloud disc only if connection is in relay mode. After setting static IP on WD disc and reservation IP set in TP-link router, connection status is “connected (Port Forwarding Connection Established)”. But in that case I get 905 error when I try to connect through mobile network on all devices. I have tried manual port forwarding (Tp-link router supports Upnp) with no results. After a few hours of struggling with WD My Cloud disc and routers setup I can tell that I don’t know how to establish non relay connection. Apparently “connected (Port Forwarding Connection Established)” status changes after some time to “Connected (Relay Connection Established)” in spite of static IP on WD disc and IP reservation on tp-link router settings.
How can I solve problem with 503 error and establish non relay connection?