Since this is a user to user forum, not Adobe support, the only advice I can give is to contact Adobe for a refund, and then find a place that still sells the older version
Have you seen the following?
Be that as it may.
As John mentioned, this is not Adobe. Rather user to user. Visitors here like yourself. It is highly unlikely that Adobe will exchange the purchased license and serial number for 13 with version 12. It does not sell 12 any more. And, this conclusion is ever more true since you did not purchase from Adobe. The policy has been - if you purchase the product as download from Adobe, within 30 days of purchase you can request return/refund. If you purchase elsewhere, you are governed by the return policy of the seller, in your case, Amazon. Under the circumstances, any likelihood of consideration is expected to come from Amazon.
And, it might even have in stock the older product that you seek?
None of what I have just mentioned should stop you from contacting Adobe Customer Service and possibly Adobe Education. But, I want to offer my impression of what you are facing. The Adobe Customer Service telephone number that can be obtained from Google Search is 1-800-833-6687. I have not found an appropriate online Adobe Chat link that I thought would be ideal for the type of situation that you present.
Thank you - and no I hadn't seen the list of removed features. Amazon did give me a refund since the feature I needed wasn't there. They really are a great place to purchase.
The customer service chat option was pretty fast - the support line people have to answer multiple calls simultaneously consequently questions were repeated and the topic had to be explained multiple times. I will be sure to search for the list of removed features whenever I'm thinking about an upgrade.
Who makes these decisions about removing features??? I had a chance to look at the upgraded photoshop and they took out the magic extractor. That was to only feature that converted me to liking anything about elements. I teach both versions and the magic extractor was amazing. Even my newbies caught on quickly and used it (some of my advanced students too).