Missing 9-digit number

I am trying to reconnect my mycloud device to Windows 10 laptop via my router and it wants a 9 digit code and says its on my quickstart guide or a sticker, there is no sticker and I lost my quickstart guide.

How do I find out what this number is?

I can access the drive from my Android and it is backing up my phone, but I can’t convince it to back up anything else without manually copying. It does not show up as a network drive either.

You’re in the wrong forum … The My Cloud does not require a 9 Digit Code to Activate.

https://support.wdc.com/knowledgebase/answer.aspx?ID=20378

The My Cloud Home does (underneath the Serial/Model Number)

https://support.wdc.com/knowledgebase/answer.aspx?ID=20408&lang=en