Private Token purchased?

Hello.
We have the enfold theme on our site https://btlt.org and from the Enfold Theme Options page there is the notice of the API expiring. There is also a link saying “A detailed description for generating this token can be found here.” “Here” being https://kriesi.at/documentation/enfold/how-to-install-enfold-theme/#theme-registration

The question we are all scratching our heads over is, “Where is the detailed description that tells us how to generate this token?

Can you shine any clarity on this issue for us?