Hi, I just bought Lightroom 5 and hit "30 day trial" because I can't find my serial number, where can I find my serial number and how do I go back and enter it?
I bought the "student" version, I don't know if that makes a difference.
The student version comes with a redemption code that you must submit along with a valid academic e-mail address and sometimes academic ID in order to verify that you qualify for the student discount. Once that information is submitted you will receive your serial number via e-mail. My experience has been that this can be accomplished in as quickly as 5 min.
Where did you purchase Lightroom??