Hi. I have purchased a 3 pc license edition. This has been confirmed by the entry in mynortonaccount.com. However when I try and activate it on a second PC it tells me I have used up all of my activations. I have checked on mynortonaccount.com and it says there are still 2 activations left. I have triple checked the license number. Trying to install on a Dell Latitude Laptop with XP Pro. Any help would be appreciated