"The old activation key has not been accepted by the license server yet."

Customer Service, hello. I have purchased
a permanent license for Parallels Desktop for Mac,
Parallels Desktop 16 for Mac Standard Edition,

as well as
a permanent license for Parallels Desktop for Mac,
Parallels Desktop 17 for Mac Standard Edition.

My Mac is installed with version 17. However, when I enter the license code for version 17, it still requires me to provide the activation key for version 16. After I enter it, I am prompted each time with the message: "The old activation key has not been accepted by the license server yet."

Please help me resolve this issue. Thank you for your assistance.
 
Okay, it looks like your license server isn't connecting your upgrade from version 16 to 17 correctly. Usually, Parallels support needs to fix this by re-syncing your old key on their side. Your keys should be okay.
 
Thank you for your response. Then how should I proceed? Please help with this issue from Parallels.
 
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