Me too, has not been able to access CP4B series since the website revamp.
If I click on CP4B on the top of the website (Learn > CP4B), below message appeared:
"You do not have sufficient privileges for this resource or its parent to perform this action."
And when I click from the link at the bottom of the website (Learn Check Point - CP4b), it shows me the welcome page of the series, but when I click either one, below message appeared:
"The article you are trying to access is not available. Note that some content is only available if you are signed into CheckMates."
I'm already signed in. Wondering is there another type of membership? Appreciate any feedback.