Block a contact
- Go to the Friends tab, and tap your friend’s name who you want to block.
- Tap Ρυθμίσεις > Block > Block (double check).
Unblock a contact
- Tap your profile on the upper left of your screen.
- Tap Setting > Μυστικότητα > Block list
- Choose the friend you want to unblock from your blacklist and tap Unblock.