I signed up or trial light room. After signing up I realized I wanted to buy the program which I purchased for 150,00. At the time we were moving and I cannot find the box with the serial number. I have since lost light room from my computer and need to reinstall. Any suggestions welcomed.
You might want to develop a method of keeping track of your serial numbers (not just for Lightroom) so that you can always find them. I keep copies in my e-mail, I keep a text file with them, and both of these are backed up locally and to the cloud.