This is a user to user forum, not Adobe support (the space is provided by Adobe)
Select a reason, then click I STILL NEED HELP to activate Premiere Elements chat
When you have Premiere Elements questions, start with The Tutorial Links Page http://forums.adobe.com/thread/1275830
Premiere Elements FAQ List (2 pages of FAQ as of September 2013) http://forums.adobe.com/community/premiere_elements/premiere_elements_faq?view=all
Premiere Elements TIPS List (6 pages of Tips as of September 2013) http://forums.adobe.com/community/premiere_elements/premiere_elements_tips?view=all
Let us back up on this a bit.
The serial number for Photoshop Elements and the serial number for Premiere Elements are not on the disc.
If you are talking disc, I am assuming that you purchased the boxed version of the product and the combo boxed product.
There should be two envelopes, one containing the Windows disc and one containing the Mac disc. These two discs (each in own envelope) are in a flat looking rectangular box which inserts into an opened at both end flat box.
The serial numbers are on a label at the bottom edge of the flat looking rectangular box.
Please take another look.
There is nothing to match up. The numbers should be where I have said they are. Once you find them keep them secure.
Please let us know the outcome.