Urania,
I see you have the license, but it seems to me you haven't assigned it to the vC Ops instance.
One can tell that by the fact that it reads "assigned - 0VMs"
1) Click the "Asset" button - you should see the vC Ops instance listed there.
2) From there assign the license to it.
3) Then get back to vC Ops / admin_UI and either restart or do what Alex Dimitrov mentioned