This is why Amazon customers asked to go directly to www.amazon.com and sign in to their account from there, instead of clicking on a link that may take them to a phishing website.
For Amazon customers who have already been tricked by the scam, it is recommended that they change their password immediately before their accounts are hijacked and used fraudulently.
The "Your Amazon Prime Membership is Set to Renew" Scam
From: Amazon Prime <firstname.lastname@example.org>
Date: June 11, 2020 at 8:52 PM
Subject: Reminder Amazon.com update
Your Amazon Prime Membership is set to renew on June 11, 2020.
However, we've noticed that the card associated with your Prime membership is no longer valid.
To update the default card or choose a new one for your membership, Please find the document attached and follow the on-screen instructions.
To prevent interruption of your benefits, we will try charging other active cards associated with your Amazon account if we can't charge your default card.
If we can't process the charge for your membership fee, your Amazon Prime benefits will be suspended.
The Amazon Prime Team