Wait until the person who blocked you decides to unblock you
Contact them through another respectful channel if appropriate
Apologize if you believe you caused the block
Avoid creating new accounts to bypass the block
Respect their privacy and boundaries
Check whether you were blocked by a person, page, or group
If it is a page or group, follow the group rules or contact the admins
Review your own Facebook behavior and remove anything that may have caused the block
If you think the block was a mistake, ask the person to review it
Use Facebook Help Center if you believe your account was restricted incorrectly