Premiere Elements is not part of the Cloud, I will move this to that forum
Premiere Elements Forum http://forums.adobe.com/community/premiere_elements
If the link Mylenium provided does not help, click below
Select a topic, then click I STILL NEED HELP to start Premiere Elements Online chat
If you have a box packaging of Premiere Elements, then you did not purchase it from Adobe direct as one of its downloads.
In that case, you could be dealing with an authorized reseller and redemption code (as has been suggested) instead of the
serial number. But there is yet another possibility. You may have a product code if you purchased the product as the
student teacher version.
Please read the following and its Adobe links to sort out issues that may be related to redemption codes, serial numbers, and product keys.
The links inside the article should give you access to Adobe Chat if further information is needed.
Please let us know the outcome.