My son has his own ps4 and wanted to renew his playstation plus membership, but the ps4 kept rejecting all of my debit/credit cards, so I got clever and found that I can do it through Amazon.
After you purchase the membership Amazon will email you the voucher code that you can then take and input directly onto your ps4 through the redeem codes section on your ps4 (google for more help.)
I got mixed up at first thinking I had to click the redeem button which then took me to sony to input a code I didn't have/recognize when it's the "voucher code" displayed in the initial email. Confusing? I know lol. Basically, don't click the redeem button. Just look for the voucher code inside the email that is sent after you purchase the membership and enter it directly on the ps4 etc.
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