Once you unblock someone, you must wait 48 hours before you can block them again. 2. Unblocking Your Own Restricted Account If Facebook has locked or disabled your account:
Click your profile picture → Settings & privacy → Settings → Blocking (left menu). Click Unblock next to the user’s name and confirm. unblock facebook
Regular VPNs don't work. Use V2Ray , Shadowsocks , or purchase a China-specific VPN like Astrill or LetsVPN. In Russia: Use Tor Browser with bridges, or a VPN that supports obfuscated servers (NordVPN’s obfuscated servers work). Once you unblock someone, you must wait 48
If you previously blocked a profile and want to allow them to see your content or message you again: Once you unblock someone