If you blocked someone on Facebook what can they see and cannot see?

[lesescaliers10]

I blocked someone on Facebook. And unfortunately, we share a secret group page on Facebook with 100+ over people. Will the person I blocked be able to see posts I make and be able to comment on them? Or with the posts they previously had commented on mine, once I block them can they still refer back to it?

[Rhaven De leon]

Usually they can't see anything. But to fix that go to your mirror clap 8 times turn around and you will find yourself in Hogwarts where they will give you an option to unblock that person or to join that school.

[Lenny]

If you have blocked a user then they will not be able to contact you or see your wall, you won't be searchable etc