How to activate Forms?

I have installed Forms and purchased a single site license. I can find no way to activate the Forms component to unlock the paid for features. Your documentation says :- "Go to: Components ➝ Forms.
Click on the icon About Forms in the top right corner of the Dashboard.
In the opened modal window click Activate and enter your Balbooa.com Username and Password into the relevant fields.". However there is no such "Activate" option displayed. Forms 2.2.1 version.

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