Wrong license key in my.avast but still works

[chris..]

hello,
there's something strange about the activation code of my product, even if it doesn't prevent my product from working.
Let me explain:
last month I renewed my subscription and received the email with the activation code (ex: "123456-123456-123456"), my license has been extended.
Now I go to my online account my.avast.com and when I ask to display my activation code, it is different from the first one (ex: "654321-654321-654321").
If I enter this code into my product via the IU, it is accepted and the expiration date does not change.
However, the code displayed in the IU remains the first ("123456-....").
To summarize the 2 codes work if I enter them in "enter your activation code"
A little strange to have two codes for the same license, isn't it?

[BWhit]

Hi chris..,

Both codes are valid and correct. The first code that you received in the email is the new/current version of our activation codes (which has the flexibility to refer to multiple licenses). The second code that you have showing on my.avast is a legacy activation code, which is specific to that singular license. Both codes are linked to the same license, and they are both valid.

[chris..]

Thank you BWhit for these further details