2016 License wont activate after having logged out. Please reach me from nelsonhone@gmail.com

I had to change my computer. However, after installing the App, i logged in to my account to get the activation code.
I tried to activate it but a pop up says: "Activation Failed. Could not connect to the activation server address in the provider settings. The remote server returned an error: (403) Forbidden."
Kindly assist me urgently as i am stuck with work.

Regards

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