I am migrating Photoshop Elements 7 to a new computer. I have located the files and installed them on my new machine. I have also noted the product serial number. When I opened Elements for the first time, I was prompted to enter the product serial number. I received a message saying the serial number was not recognised. I have repeated the process several times with no success. I am using a Windows 10 pro system. As I am not currently an enterprise customer, there does not seem to be any way for me to contact Adobe directly. I would be grateful for any assistance anyone can offer.