Redeem Code gives an error

Nuendo
1

Redeem Code gives the following error:

Screenshot 2025-10-30 at 20.17.23
Screenshot 2025-10-30 at 20.17.23657×519 25.9 KB

Screenshot 2025-10-30 at 20.21.53
Screenshot 2025-10-30 at 20.21.53657×519 26.5 KB

How could I solve the problem?

Thanks in advance.