If you've synced your friends list or engagements within the last 6 hours, the sync button on FriendFilter might be grayed out or unavailable. 



This 6-hour gap helps prevent temporary locks on your Facebook account due to exceeding Facebook's activity limits. 


These soft blocks are determined by Facebook and can't be entirely avoided, but our practices can reduce the risk.


Learn more about soft blocks here:

  • What are Facebook limits?
  • What happens when you go over?
  • How to avoid going over your limit


For more questions, visit our FAQ page. 

Can’t find the answer? Contact support at help@friendfilter.io