With FKB Pro and using a link, not buttons by Discourse?
I should tell everything right away… I know, I’m a bad person 
- Category lockdown plugin is in use random visitors
- locked topics are using icon… damn, how can I use those here… well,
user-secret (or something, that trenchcoat icon - clicking such topic will redirect to
/login - FKB Pro gives just spinning icon (but it isn’t default right now for obvious reason; after 15 secs it is
)