Windows 10: Device is not showing under my Microsoft account

I used to be able to see my devices under my Microsoft account but it no longer shows any devices.

:)

 

Microsoft Account devices list.

Thank you again but thats not the problem either.

I should be able to login to my Microsoft online account from any of my 4 PC's and see the exact same devices listed i.e. all 4 PC's should show up within the account devices list but they dont. Each PC displays a different device list.

 

Cannot sign in microsoft account.

My device: Lumia 520. GDR2.
I cannot sign in my Microsoft account on my device. It didnt say any error but Microsoft account is not listed in Email and account list. When I click add button, it will show microsoft account option but after press sign in, it is still not shown in email
and account. Another problem is i cannot delete facebook account. Error code: 0x83cf1202. I have tried as suggested here: http://support.microsoft.com/kb/2475837/en-us#step0x83cf1202 but as my Microsoft account is not shown, I cannot do step 6.

Any suggestion?