Can't setup my cloud

I have my cloud 4 TB, I connected it in my net, blue light is on, but in web browser entering the My Cloud, choose my device and next see This site can’t be reached
please help me to set up my cloud,
thankyou in advance

You can setup the OS5 (v5.x firmware) My Cloud by accessing the OS5 My Cloud Dashboard using a web browser from a computer connected to the same local network as the OS5 My Cloud.

My Cloud OS 5: How to Set Up Using the Dashboard