1. When the user is offline, this means that this use has not been logged inside Sitefinity.
2. You can use ASP.NET membership provider with our controls. We have wrapper classes
that handle the implementation of the standard ASP.NET membership and role providers.
3. This is not supported out of the box. You can create a simple backend page with a grid that gets all users and set IsApproved
property of the MembershipUser.
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items