Unable to view documentation for JS.SDK for some section

When trying to view the section of documentation for JS SDK (Backendless SDK for JavaScript API Documentation) by clicking on the link on the left, some of the section always gets redirected back to the welcome section
It seems like the last section that can be displayed is User Service API > Get Current User

Below are just some of the link for the section that will be redirected back to the welcome section

Hi Francis,

Thank you for bringing this to our attentoin. The problem has been fixed and the documentation on the website is updated.