Two parallel Creative Cloud Photography Plans (1 TB) after redeeming Amazon code

Hello everyone,

I wanted to switch from my Creative Cloud Photography Plan 20 GB (which runs until January 2026) to the Creative Cloud Photography Plan 1 TB. As there was a great Black Friday deal on Amazon (104 € for the 1 TB plan), I bought two activation codes and redeemed them on Friday, November 28th to have the 1 TB plan running until November 2027. After redeeming the first activation code for the 1 TB plan and canceling the 20 GB plan, I redeemed the second activation code for the 1 TB plan and expected it to extend the first 1 TB plan as they are exactly the same. Unfortunately, I noticed that I have both 1 TB plans now running in parallel, both ending in November 2026. I didn't find any hint that the Amazon offer would only apply to new customers, they only stated that it would not extend a 20 GB plan (which I was aware of as these are two different products).
Is there any possibility to merge the two parallel 1 TB plans into one plan that runs until November 2027 or alternatively cancel the second 1 TB plan and get a new code that I can redeem in November 2026? Unfortunately the Amazon reseller doesn't offer refunds for redeemed codes and I didnt't pay attention to that when buying.

Many thanks in advance.

Best regards,
Peter