After I purchased pselements 12 and premiere elements 12 I downloaded and installed pselements 12 but I cannot find how to download and install premiere elements 12 because that window has disappeared and I can't get back to it. How do I download and install premiere elements 12? where is it? how can I find it?
I am assuming that the purchase and download is from Adobe. You should find the information that you seek under My Orders at http://www.adobe.com after you sign in (as per John's link).
However, if you have difficulties in going that route, please contact Adobe via Adobe Chat to discuss your order under the topic of Orders, Refunds, and Exchanges. To do that, click on the following link, and, when it opens, make sure that the topic is set at "Orders, Refunds, and Exchanges", click on the statement "Still need help? Contact us." to bring up the Adobe Chat.
Please let us know the outcome.