Don't fret! This is an easy fix.
To unblock a friend, follow these steps:
To do so on Android follow these steps:
- From the "Friends" tab, tap magnifying glass > enter friend's full name or e-mail address > select friend > tap "Unblock."
- Go to your Contacts list > search for the person by e-mail or full name > tap on their profile picture > tap "Unblock."