HOW TO FIX FACEBOOK BLOCK FOR 72 HOURS | PROBLEM SOLVED

You can't post or comment for 72 hours; Facebook account blocked for 72 hours due to violation of community standards.

Here is some reason why you block in Facebook...
Facebook “Community Standards” a list of official rules that outlines the types of posts that can get you banned from using Facebook. It also outlines the types of users it doesn't allow to post