normally I use Chrome, but this time, as you can see from screens there is IE (in admin mode) I could not have access to the "Manage" anything, even as admin.
So I needed to change the account as "Network Service" (from the "built-in" one). I have no idea why that restricted me the access.
For anyone wondering how I resolved the problem, please see more details here https://serverfault.com/a/1055372/312894