Back from two week vacation and WD My Cloud does not work anymore

My Cloud OS 3 Personal & Network Attached Storage My Cloud
3

Hi Mike,
a power outage is possible. I start the router again, but no NAS is founded.
Since this morning the LED is red :frowning:- I reboot the NAS again. The WD NAS has still only the red light on the front. I reset the NAS, LED move the yellow/White but at the end it turns again to red.
Any think I can do now? I hope I don´t lost all the data on my disk.
Hope for help!!
Achim