1
Install Keywords Everywhere for Chrome, Firefox or Edge
Before you can purchase a subscription, you need to have installed the Keywords Everywhere extension for Chrome or Firefox or Edge
Next
2
Setup the API Key
Once you've installed the extension, you need to sign up for an API key and set it up.
Next
3
Click the icon at the top right of your browser
In the popup that opens, at the bottom, you will find the link to purchase a subscription. Clicking this link will take you to the pricing page where you can choose the plan you want to buy.