I only have 2 installed.
What happened was, the Laptop I'm using now was corrupted and I had it reinstalled at some random shop.
It still says 2/3 then I reinstall and now it is 3/3 used?
Am I able to make it 2/3 because my mum and I are the only ones that use the product and if someone has stolen my product key I would love to know that.