The previous activation key has not been accepted by the license server

I have the same issue. Help me please.
I bought license of version 13, and upgrade twice (version 15 & 16).
Now I used PD 16 in a new Mac, I inputed the version 16 upgrade key, the app asked previous key, and i inputed version 14 key, it prompt not accepted. Same as version 13 key.

 

Thank you HamidA. Please let us know if you have any additional questions.

 

Hello, we have sent you a private message. Please help us with your Parallels Desktop for Mac license key over there. Thanks.

 

Hi, I'm also having the same problem as everyone else. It says that I have entered a license key, but it asks for a previous key. I am aware it was in some email, but I didn't get it, or maybe it was deleted. If this is the case, how to I access the previous key? Please send help.

 

Hello,
Please be informed that in order to activate Parallels Desktop for Mac Upgrade license you must have a Parallels Desktop legacy permanent license to act like the previous version key while activation. If you don't have any Parallels Desktop legacy permanent license, please provide us with the payment reference number or the Parallels Desktop license key, so that we can initiate the refund for your Parallels Desktop for Mac Upgrade license, so that you can purchase Parallels Desktop full license. Thanks.

 

Ok, I can provide the payment reference number, but where should I do that?

 

Hello, we have sent you a private message. Please help us with your payment reference number over there. Thanks.

 

Hi

I buy a new license key by Parallels Desktop for Mac, but it alert about that message:The previous activation key has not been accepted by the license server.

Please help! Thanks.

 

Hello, we have sent you a personal message. Please provide us with the payment reference number or email address so that we can check this further. Thanks.

 

Hello, I bought an upgrade key instead of a new key. Someone else from your side was able to assist, I got a refund today and I bought a new key. Thank you

 

Hi, I am having the same problem. It is not allowing me to use the key I paid for to upgrade.

 

Hello, sorry to bother. I have the same issue as well. I have already got a pd16 permanent license and bought a pd18 upgrade license. But the application told me that
the previous activation key has not been accepted by the license server.

 

Thank you. Please let us know if you have any additional questions.

 

Hello, we have sent you a personal message. Please provide us with the payment reference number or email address so that we can check this further. Thanks.

 

Hello, we have sent you a personal message. Please provide us with the payment reference number or email address so that we can check this further. Thanks.

 

I have the same problem right now,
How can I solve this problem without losing money

Please help me Bhargava@Parallels

 

I have the same problem right now,
How can I solve this problem without losing money
Please help me Bhargava@Parallels

 

I hava the same problem, please help me. thanks.