after the trial period, I decided to buy Lightroom, but I realized that I only bought the upgrade! In fact, after the insertion of the serial that was sent to me, asks me the serial number of the previous version. Is there a way to prevent new purchases at full price the full version at a discount? In Italy the full version costs about 130 euro and update about 70.
You need to contact Adobe for purchasing issues. This forum is really for technical support, and we are not Adobe employees, just Lightroom users, so we cannot help.