Thank you for bringing this to our attention! I apologize you are seeing this message when viewing your event's Landing Page. Is it appearing in more than one browser? We have seen cases where the unsecure warning appears depending on the browser being used. At this time, the only way to completely eliminate this security warning is to disable the Landing Page itself. I apologize for any inconvenience this may cause! However turning the Landing Page off will fully eliminate the warning across all browsers.