PVZ heroes

I’m playing Plants vs Zombies Heroes on Android, and I’ve recently reinstalled the app. My progress was successfully restored . However, I still don’t have any option to view or accept friend requests, even though my friends (with the same app version) can send and receive them. One of my friends even sent me a request, but I have no “Friends” option, no social tab, and nothing in my settings to manage it. I’ve tried clearing app data, reinstalling, and launching from Google Play Games still no change.