Invalid Product Key

I just renewed my subscription online and from the computer I purchased it on, everything is fine. When I try to enter the Product Key on my other laptop it says "Invalid Product Key." So I've figured I typed it in wrong but I've re-entered it over 5 times now and it is still saying "Invalid Product Key."

 

I used the link from my Norton Anti Virus Software application to renew my subscription so i know I went to the correct site, but is there some sort of waiting period before I can renew my subscription to my other laptop?

 

Any help would be appreciated! :)