Perdida de peliculas y datos

un saludo se ha actualizado el Firmware y me han desaparecido de la carpeta raiz todos los datos y peliculas, wd my cloud dice que estan pero la carpeta está vacia, me sale usuario de dispositivo no encontrado 400015, ayuda por favor, gracias anticipadas

More information is needed. What My Cloud model and firmware version do you have? Have you tried a 40 second reset? Have you tried accessing the My Cloud using SSH to see if the user folders are still there? Have you used the forum search feature, magnifying glass icon upper right, to review past discussions on missing user data after firmware update to see if those past discussions are relevant to yours?

https://support.wdc.com/knowledgebase/answer.aspx?ID=13986