This is a feature to unblock users who you blocked in the past.
How to unblock users(iOS)
- Tap the Settings icon in the profile page, tap [User]
- Tap [Blocked users]
- Tap [Block]
- In order to confirm the action, tap [Unblock]
How to unblock users(Android)
- Tap the Settings icon at the top right of the profile page
- Tap the account name
- Tap [User management]
- Tap [Blocked users]
-
Tap [Unblock]
please note that on Android there is no confirmation process once you tap[Unblock]