10/12/2018 at 9:35 pm #474859
Are you working locally installed instance of WP. According to the link you supplied, it seems you might be.
If that is the case, I will not be able to login an look. It also means you might not be able to activate the license keys. Reasons could be many. From your local instance blocking outgoing connections to the firewall on you local pc or network blocking the connections. All of which would be beyond my control and could not fix for you.
So, if you are working locally, I would not worry about the license activate. Like I said, the items will function just fine. After you deploy onto a live server, then activate.
Hope this helps, let me know.