Themeforest API key

Envato Customers Purchases and Subscriptions
1

I purchased a Polaris wordpress theme and there requires Go to Themeforest and generate an API key, copy it and then paste it in the appropriate box below.

However, as shown in the example, there is no option to generate an API to my settings.

Where can I generate the right key?

2

Instructions in this link https://help.author.envato.com/hc/en-us/articles/360000472603-Account-Settings-FAQ-s